Description
c-ares is an asynchronous resolver library. When cross-compiling c-ares and using the autotools build system, CARES_RANDOM_FILE will not be set, as seen when cross compiling aarch64 android. This will downgrade to using rand() as a fallback which could allow an attacker to take advantage of the lack of entropy by not using a CSPRNG. This issue was patched in version 1.19.1.
References (5)
Scores
CVSS v3
3.7
EPSS
0.0008
EPSS Percentile
22.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-330
Status
published
Products (3)
c-ares_project/c-ares
< 1.19.1
fedoraproject/fedora
37
fedoraproject/fedora
38
Published
May 25, 2023
Tracked Since
Feb 18, 2026