Buffer Underwrite in ares_inet_net_pton()
CVE-2023-31130

6.4MEDIUM

Key Information:

Vendor

C-ares

Status
C-ares
Vendor
CVE Published:
25 May 2023

What is CVE-2023-31130?

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.

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Affected Version(s)

c-ares < 1.19.1

References

https://github.com/c-ares/c-ares/security/advisories/GHSA...
x_refsource_CONFIRM
https://github.com/c-ares/c-ares/releases/tag/cares-1_19_1
x_refsource_MISC
https://lists.fedoraproject.org/archives/list/package-ann...

CVSS V3.1

Score:
6.4
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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