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debiancveDebian Security Bug TrackerDEBIANCVE:CVE-2023-31130
HistoryMay 25, 2023 - 10:15 p.m.

CVE-2023-31130

2023-05-2522:15:09
Debian Security Bug Tracker
security-tracker.debian.org
16

7 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.2%

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.