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Amazon Linux 2023: CVE-2023-31130: Important priority package update for c-ares (Multiple Advisories)

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Amazon Linux 2023: CVE-2023-31130: Important priority package update for c-ares (Multiple Advisories)

Severity
5
CVSS
(AV:L/AC:H/Au:M/C:N/I:C/A:C)
Published
05/22/2023
Created
02/14/2025
Added
02/14/2025
Modified
02/14/2025

Description

c-ares is an asynchronous resolver library. ares_inet_net_pton() is vulnerable to a buffer underflow for certain ipv6 addresses, in particular "0::00:00:00/2" was found to cause an issue.C-ares only uses this function internally for configuration purposes which would require an administrator to configure such an address via ares_set_sortlist(). However, users may externally use ares_inet_net_pton() for other purposes and thus be vulnerable to more severe issues. This issue has been fixed in 1.19.1. A vulnerability was found in c-ares. This issue occurs in the ares_inet_net_pton() function, which is vulnerable to a buffer underflow for certain ipv6 addresses. "0::00:00:00/2" in particular was found to cause an issue. C-ares only uses this function internally for configuration purposes, which would require an administrator to configure such an address via ares_set_sortlist().

Solution(s)

  • amazon-linux-2023-upgrade-c-ares
  • amazon-linux-2023-upgrade-c-ares-debuginfo
  • amazon-linux-2023-upgrade-c-ares-debugsource
  • amazon-linux-2023-upgrade-c-ares-devel
  • amazon-linux-2023-upgrade-ecs-service-connect-agent

References

  • https://attackerkb.com/topics/cve-2023-31130
  • CVE - 2023-31130
  • https://alas.aws.amazon.com/AL2023/ALAS-2023-198.html
  • https://alas.aws.amazon.com/AL2023/ALAS-2023-344.html
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