Vulnerability-Lookup

OESA-2024-2313 (CVE-2022-4450)

Vulnerability from osv_openeuler – Published: 2024-11-01 11:07 – Updated: 2026-08-06 11:07 – Source website

Summary

openresty-openssl111 security update

Details

Security Fix(es):

The functions PEM_read_bio() and PEM_read() are simple wrappers around PEM_read_bio_ex() and therefore these functions are also directly affected.

These functions are also called indirectly by a number of other OpenSSL functions including PEM_X509_INFO_read_bio_ex() and SSL_CTX_use_serverinfo_file() which are also vulnerable. Some OpenSSL internal uses of these functions are not vulnerable because the caller does not free the header argument if PEM_read_bio_ex() returns a failure code. These locations include the PEM_read_bio_TYPE() functions as well as the decoders introduced in OpenSSL 3.0.

The OpenSSL asn1parse command line application is also impacted by this issue.

(CVE-2022-4450)

Severity

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2022-4450	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "openresty-openssl111-1.1.1h-5.oe2203sp1.aarch64.rpm",
          "openresty-openssl111-asan-1.1.1h-5.oe2203sp1.aarch64.rpm",
          "openresty-openssl111-asan-devel-1.1.1h-5.oe2203sp1.aarch64.rpm",
          "openresty-openssl111-debug-1.1.1h-5.oe2203sp1.aarch64.rpm",
          "openresty-openssl111-debug-devel-1.1.1h-5.oe2203sp1.aarch64.rpm",
          "openresty-openssl111-devel-1.1.1h-5.oe2203sp1.aarch64.rpm"
        ],
        "src": [
          "openresty-openssl111-1.1.1h-5.oe2203sp1.src.rpm"
        ],
        "x86_64": [
          "openresty-openssl111-1.1.1h-5.oe2203sp1.x86_64.rpm",
          "openresty-openssl111-asan-1.1.1h-5.oe2203sp1.x86_64.rpm",
          "openresty-openssl111-asan-devel-1.1.1h-5.oe2203sp1.x86_64.rpm",
          "openresty-openssl111-debug-1.1.1h-5.oe2203sp1.x86_64.rpm",
          "openresty-openssl111-debug-devel-1.1.1h-5.oe2203sp1.x86_64.rpm",
          "openresty-openssl111-devel-1.1.1h-5.oe2203sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP1",
        "name": "openresty-openssl111",
        "purl": "pkg:rpm/openEuler/openresty-openssl111\u0026distro=openEuler-22.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.1h-5.oe2203sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "Security Fix(es):\r\n\r\nThe function PEM_read_bio_ex() reads a PEM file from a BIO and parses and\ndecodes the \u0026quot;name\u0026quot; (e.g. \u0026quot;CERTIFICATE\u0026quot;), any header data and the payload data.\nIf the function succeeds then the \u0026quot;name_out\u0026quot;, \u0026quot;header\u0026quot; and \u0026quot;data\u0026quot; arguments are\npopulated with pointers to buffers containing the relevant decoded data. The\ncaller is responsible for freeing those buffers. It is possible to construct a\nPEM file that results in 0 bytes of payload data. In this case PEM_read_bio_ex()\nwill return a failure code but will populate the header argument with a pointer\nto a buffer that has already been freed. If the caller also frees this buffer\nthen a double free will occur. This will most likely lead to a crash. This\ncould be exploited by an attacker who has the ability to supply malicious PEM\nfiles for parsing to achieve a denial of service attack.\r\n\r\nThe functions PEM_read_bio() and PEM_read() are simple wrappers around\nPEM_read_bio_ex() and therefore these functions are also directly affected.\r\n\r\nThese functions are also called indirectly by a number of other OpenSSL\nfunctions including PEM_X509_INFO_read_bio_ex() and\nSSL_CTX_use_serverinfo_file() which are also vulnerable. Some OpenSSL internal\nuses of these functions are not vulnerable because the caller does not free the\nheader argument if PEM_read_bio_ex() returns a failure code. These locations\ninclude the PEM_read_bio_TYPE() functions as well as the decoders introduced in\nOpenSSL 3.0.\r\n\r\nThe OpenSSL asn1parse command line application is also impacted by this issue.\r\n\r\n\n(CVE-2022-4450)",
  "id": "OESA-2024-2313",
  "modified": "2026-08-06T11:07:47Z",
  "published": "2024-11-01T11:07:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-2313"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-4450"
    }
  ],
  "schema_version": "1.7.2",
  "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": "openresty-openssl111 security update",
  "upstream": [
    "CVE-2022-4450"
  ]
}

CVE-2022-4450 (GCVE-0-2022-4450)

Vulnerability from cvelistv5 – Published: 2023-02-08 19:04 – Updated: 2025-11-04 19:14

Title

Double free after calling PEM_read_bio_ex

Summary

The function PEM_read_bio_ex() reads a PEM file from a BIO and parses and decodes the "name" (e.g. "CERTIFICATE"), any header data and the payload data. If the function succeeds then the "name_out", "header" and "data" arguments are populated with pointers to buffers containing the relevant decoded data. The caller is responsible for freeing those buffers. It is possible to construct a PEM file that results in 0 bytes of payload data. In this case PEM_read_bio_ex() will return a failure code but will populate the header argument with a pointer to a buffer that has already been freed. If the caller also frees this buffer then a double free will occur. This will most likely lead to a crash. This could be exploited by an attacker who has the ability to supply malicious PEM files for parsing to achieve a denial of service attack. The functions PEM_read_bio() and PEM_read() are simple wrappers around PEM_read_bio_ex() and therefore these functions are also directly affected. These functions are also called indirectly by a number of other OpenSSL functions including PEM_X509_INFO_read_bio_ex() and SSL_CTX_use_serverinfo_file() which are also vulnerable. Some OpenSSL internal uses of these functions are not vulnerable because the caller does not free the header argument if PEM_read_bio_ex() returns a failure code. These locations include the PEM_read_bio_TYPE() functions as well as the decoders introduced in OpenSSL 3.0. The OpenSSL asn1parse command line application is also impacted by this issue.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-23 13:26 UTC

CWE

double-free
CWE-415 - Double Free

Assigner

openssl mitre root

References

5 references

URL	Tags
https://www.openssl.org/news/secadv/20230207.txt	vendor-advisory
https://git.openssl.org/gitweb/?p=openssl.git;a=c…	patch
https://git.openssl.org/gitweb/?p=openssl.git;a=c…	patch
https://security.gentoo.org/glsa/202402-08
https://psirt.global.sonicwall.com/vuln-detail/SN…

Impacted products

1 product

Vendor	Product	Version
OpenSSL	OpenSSL	Affected: 3.0.0 , < 3.0.8 (semver) Affected: 1.1.1 , < 1.1.1t (custom)

Date Public

2023-02-07 00:00

Credits

CarpetFuzz Dawei Wang Marc Schönefeld Kurt Roeckx Matt Caswell

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.