rhsa-2022_1263
Vulnerability from csaf_redhat
Published
2022-04-07 09:05
Modified
2024-12-02 01:15
Summary
Red Hat Security Advisory: RHV-H security update (redhat-virtualization-host) 4.3.22
Notes
Topic
An update for redhat-release-virtualization-host and redhat-virtualization-host is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
The redhat-virtualization-host packages provide the Red Hat Virtualization Host.
These packages include redhat-release-virtualization-host. Red Hat
Virtualization Hosts (RHVH) are installed using a special build of Red Hat
Enterprise Linux with only the packages required to host virtual machines.
RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks.
Security Fix(es):
* kernel: Use After Free in unix_gc() which could result in a local privilege escalation (CVE-2021-0920)
* kernel: use-after-free in RDMA listen() (CVE-2021-4028)
* kernel: fget: check that the fd still exists after getting a ref to it (CVE-2021-4083)
* kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL (CVE-2021-4155)
* aide: heap-based buffer overflow on outputs larger than B64_BUF (CVE-2021-45417)
* kernel: possible privileges escalation due to missing TLB flush (CVE-2022-0330)
* openssl: Infinite loop in BN_mod_sqrt() reachable when parsing certificates (CVE-2022-0778)
* kernel: failing usercopy allows for use-after-free exploitation (CVE-2022-22942)
* cyrus-sasl: failure to properly escape SQL input allows an attacker to execute arbitrary SQL commands (CVE-2022-24407)
* expat: Malformed 2- and 3-byte UTF-8 sequences can lead to arbitrary code execution (CVE-2022-25235)
* expat: Namespace-separator characters in "xmlns[:prefix]" attribute values can lead to arbitrary code execution (CVE-2022-25236)
* expat: Integer overflow in storeRawNames() (CVE-2022-25315)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Bug Fix(es):
* RHV-H has been rebased on RHEL-7.9.z #13 (BZ#2048409)
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
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{
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"text": "A vulnerability was found in unix_dgram_recvmsg in net/unix/af_unix.c in the Linux kernel\u0027s garbage collection for Unix domain socket file handlers. In this flaw, a missing cleanup may lead to a use-after-free due to a race problem. This flaw allows a local user to crash the system or escalate their privileges on the system.\r\n\r\nA read-after-free memory flaw was found in the Linux kernel\u0027s garbage collection for Unix domain socket file handlers in the way users call close() and fget() simultaneously and can potentially trigger a race condition. This flaw allows a local user to crash the system or escalate their privileges on the system.",
"title": "Vulnerability description"
},
{
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"text": "kernel: Use After Free in unix_gc() which could result in a local privilege escalation",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2021-4155"
},
{
"category": "external",
"summary": "RHBZ#2034813",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2034813"
},
{
"category": "external",
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"url": "https://www.cve.org/CVERecord?id=CVE-2021-4155"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-4155",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-4155"
},
{
"category": "external",
"summary": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=983d8e60f50806f90534cc5373d0ce867e5aaf79",
"url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=983d8e60f50806f90534cc5373d0ce867e5aaf79"
}
],
"release_date": "2022-01-10T06:36:00+00:00",
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{
"category": "vendor_fix",
"date": "2022-04-07T09:05:42+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/2974891",
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"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2022:1263"
},
{
"category": "workaround",
"details": "This issue can be mitigated by ensuring xfs_alloc_file_space is not called with \"0\" as an argument.\n\nThis can be done with a SystemTap script (which resets \"0\" with XFS_BMAPI_PREALLOC), below are the steps:\n\n1) Save the following script in a \u0027CVE-2021-4155.stp\u0027 file\n\n--- On Red Hat Enterprise Linux 6 ---\nprobe module(\"xfs\").function(\"xfs_alloc_file_space\") {\n\tif ($alloc_type == 0)\n\t\t$alloc_type = 0x40;\t# XFS_BMAPI_PREALLOC\n}\n--- On Red Hat Enterprise Linux 6 ---\n\n--- On Red Hat Enterprise Linux 7 onwards ---\nprobe module(\"xfs\").function(\"xfs_alloc_file_space\") {\n\tif ($alloc_type == 0)\n\t\t$alloc_type = 0x8;\t# XFS_BMAPI_PREALLOC\n}\n--- On Red Hat Enterprise Linux 7 onwards ---\n\n2) Install systemtap package and its dependencies\n\n # yum install -y systemtap systemtap-runtime\n # yum install -y kernel-devel kernel-debuginfo\n\n3) Build the mitigation kernel module as root.\n\n # stap -r `uname -r` -m cve_2021_4155.ko -g CVE-2021-4155.stp -p4\n\n4) Load the mitigation module as root\n\n # staprun -L cve_2021_4155.ko\n\n\n\nWhat is SystemTap and how to use it?\nhttps://access.redhat.com/solutions/5441",
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"attackComplexity": "LOW",
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"availabilityImpact": "NONE",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
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"category": "impact",
"details": "Important"
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"title": "kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL"
},
{
"cve": "CVE-2021-45417",
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"id": "CWE-787",
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"ids": [
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],
"notes": [
{
"category": "description",
"text": "A heap-based buffer overflow vulnerability in the base64 functions of AIDE, an advanced intrusion detection system. An attacker could crash the program and possibly execute arbitrary code through large (\u003c16k) extended file attributes or ACL.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "aide: heap-based buffer overflow on outputs larger than B64_BUF",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-45417",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-45417"
}
],
"release_date": "2022-01-20T14:00:00+00:00",
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{
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"attackVector": "NETWORK",
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"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "aide: heap-based buffer overflow on outputs larger than B64_BUF"
},
{
"cve": "CVE-2022-0330",
"cwe": {
"id": "CWE-281",
"name": "Improper Preservation of Permissions"
},
"discovery_date": "2022-01-19T00:00:00+00:00",
"flags": [
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"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2042404"
}
],
"notes": [
{
"category": "description",
"text": "A random memory access flaw was found in the Linux kernel\u2019s GPU i915 kernel driver functionality in the way a user may run malicious code on the GPU. This flaw allows a local user to crash the system or escalate their privileges on the system.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: possible privileges escalation due to missing TLB flush",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "For the Red Hat Enterprise Linux default configuration, the issue occurs only if a local user is running malicious code on GPU. The GPU is used and the user is required to have privileges to access the i915 Intel GPU.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2022-0330",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-0330"
},
{
"category": "external",
"summary": "https://www.openwall.com/lists/oss-security/2022/01/25/12",
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}
],
"release_date": "2022-01-25T00:00:00+00:00",
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{
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"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/2974891",
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},
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},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options don\u0027t meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
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"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.0,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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"threats": [
{
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"details": "Important"
}
],
"title": "kernel: possible privileges escalation due to missing TLB flush"
},
{
"cve": "CVE-2022-0778",
"cwe": {
"id": "CWE-835",
"name": "Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)"
},
"discovery_date": "2022-03-09T00:00:00+00:00",
"flags": [
{
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}
],
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2062202"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in OpenSSL. It is possible to trigger an infinite loop by crafting a certificate that has invalid elliptic curve parameters. Since certificate parsing happens before verification of the certificate signature, any process that parses an externally supplied certificate may be subject to a denial of service attack.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "openssl: Infinite loop in BN_mod_sqrt() reachable when parsing certificates",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "While Red Hat initially stated not to be directly affected by this flaw, after further investigation we found that the versions of OpenSSL as shipped in Red Hat Enterprise Linux 6, 7, and 8 are vulnerable to a denial of service attack through malicious Elliptic Curve parameters. During processing of the parameters OpenSSL will call BN_mod_sqrt() with invalid arguments, causing the process to enter an infinite loop. The invalid EC parameters can be provided to OpenSSL through X.509 certificates (used in TLS connections), through public and private keys, through certificate signing requests and other places where applications process Elliptic Curve parameters. The flaw has been rated as having a security impact of Important. A future update will address this issue in Red Hat Enterprise Linux 6, 7 and 8.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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"title": "Statement"
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{
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{
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},
{
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},
{
"category": "external",
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"url": "https://blog.hartwork.org/posts/expat-2-4-5-released/"
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{
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"id": "CWE-179",
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},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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{
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"title": "expat: Namespace-separator characters in \"xmlns[:prefix]\" attribute values can lead to arbitrary code execution"
},
{
"cve": "CVE-2022-25315",
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"id": "CWE-787",
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},
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},
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],
"title": "expat: Integer overflow in storeRawNames()"
}
]
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.