rhsa-2023_6291
Vulnerability from csaf_redhat
Published
2023-11-02 15:54
Modified
2024-11-06 04:06
Summary
Red Hat Security Advisory: c-ares security update
Notes
Topic
An update for c-ares is now available for Red Hat Enterprise Linux 9.0 Extended Update Support.
Red Hat Product Security has rated this update as having a security impact of Moderate. 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 c-ares C library defines asynchronous DNS (Domain Name System) requests and provides name resolving API.
Security Fix(es):
* c-ares: buffer overflow in config_sortlist() due to missing string length check (CVE-2022-4904)
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.
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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"name": "Improper Restriction of Operations within the Bounds of a Memory Buffer"
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"text": "2168631"
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"category": "description",
"text": "A flaw was found in the c-ares package. The ares_set_sortlist is missing checks about the validity of the input string, which allows a possible arbitrary length stack overflow. This issue may cause a denial of service or a limited impact on confidentiality and integrity.",
"title": "Vulnerability description"
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{
"category": "summary",
"text": "c-ares: buffer overflow in config_sortlist() due to missing string length check",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "The severity of this vulnerability is not important but moderate because exploiting the vulnerability can lead to a disruption of the availability of an application, yet doesn\u2019t compromise data integrity or confidentiality. The opportunity for disruption is further limited due to the requirement that an application allows an attacker to be able to input both untrusted and unvalidated data. Exploiting this flaw requires an application to use the library in such a way that would allow untrusted and unvalidated input to be passed directly to ares_set_sortlist by an attacker. In the event that this is able to occur, the impact to RHEL is limited to a crash of the application due to the protections offered by default in RHEL systems such as Stack Smashing Protection (SSP).",
"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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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2022-4904"
},
{
"category": "external",
"summary": "RHBZ#2168631",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2168631"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2022-4904",
"url": "https://www.cve.org/CVERecord?id=CVE-2022-4904"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2022-4904",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-4904"
},
{
"category": "external",
"summary": "https://github.com/c-ares/c-ares/issues/496",
"url": "https://github.com/c-ares/c-ares/issues/496"
}
],
"release_date": "2022-12-13T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2023-11-02T15:54:28+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/11258",
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"url": "https://access.redhat.com/errata/RHSA-2023:6291"
}
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"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.6,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H",
"version": "3.1"
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"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "c-ares: buffer overflow in config_sortlist() due to missing string length check"
}
]
}
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- 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.