A c-ares security update has been released for Debian GNU/Linux 8 and 9 Extended LTS to address two vulnerabilities.
ELA-883-1 c-ares security update
Package : c-ares
Version : 1.10.0-2+deb8u5 (jessie), 1.12.0-1+deb9u4 (stretch)
Related CVEs :
CVE-2023-31130
CVE-2023-32067
Two vulnerabilities were discovered in c-ares, an asynchronous name
resolver library:
CVE-2023-31130
ares_inet_net_pton() is found to be 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, however external usage for other purposes may
cause more severe issues.
CVE-2023-32067
Target resolver may erroneously interprets a malformed UDP packet
with a length of 0 as a graceful shutdown of the connection, which
could cause a denial of service.
