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Ubuntu: (Multiple Advisories) (CVE-2023-31130): c-ares vulnerabilities

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Ubuntu: (Multiple Advisories) (CVE-2023-31130): c-ares vulnerabilities

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
05/25/2023
Created
06/15/2023
Added
06/15/2023
Modified
11/15/2024

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.

Solution(s)

  • ubuntu-pro-upgrade-libc-ares2

References

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