vulnerability
Debian: CVE-2023-31130: c-ares -- security update
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:L/AC:M/Au:M/C:N/I:N/A:C) | May 25, 2023 | Jun 8, 2023 | Aug 15, 2025 |
Severity
4
CVSS
(AV:L/AC:M/Au:M/C:N/I:N/A:C)
Published
May 25, 2023
Added
Jun 8, 2023
Modified
Aug 15, 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.
Solution
debian-upgrade-c-ares
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