VulnerableCode Package Details - pkg:ebuild/net-dns/c-ares@1.19.1

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Vulnerability	Summary	Fixed by
This package is not known to be affected by vulnerabilities.

Vulnerability

Summary

Fixed by

This package is not known to be affected by vulnerabilities.

Vulnerability	Summary	Aliases
VCID-3nsu-sz9r-pkbf	Use of Insufficiently Random Values 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.	CVE-2023-31124 GHSA-54xr-f67r-4pc4
VCID-h5yg-sx9b-ska5	Use of Insufficiently Random Values c-ares is an asynchronous resolver library. When /dev/urandom or RtlGenRandom() are unavailable, c-ares uses rand() to generate random numbers used for DNS query ids. This is not a CSPRNG, and it is also not seeded by srand() so will generate predictable output. Input from the random number generator is fed into a non-compilant RC4 implementation and may not be as strong as the original RC4 implementation. No attempt is made to look for modern OS-provided CSPRNGs like arc4random() that is widely available. This issue has been fixed in version 1.19.1.	CVE-2023-31147 GHSA-8r8p-23f3-64c2
VCID-pavw-rssx-53cg	Uncontrolled Resource Consumption c-ares is an asynchronous resolver library. c-ares is vulnerable to denial of service. If a target resolver sends a query, the attacker forges a malformed UDP packet with a length of 0 and returns them to the target resolver. The target resolver erroneously interprets the 0 length as a graceful shutdown of the connection. This issue has been patched in version 1.19.1.	CVE-2023-32067 GHSA-9g78-jv2r-p7vc
VCID-vezx-cgbw-zqdp	Buffer Underwrite ('Buffer Underflow') 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.	CVE-2023-31130 GHSA-x6mf-cxr9-8q6v

Vulnerability

Summary

Aliases

VCID-3nsu-sz9r-pkbf

Use of Insufficiently Random Values 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.

CVE-2023-31124
GHSA-54xr-f67r-4pc4

VCID-h5yg-sx9b-ska5

Use of Insufficiently Random Values c-ares is an asynchronous resolver library. When /dev/urandom or RtlGenRandom() are unavailable, c-ares uses rand() to generate random numbers used for DNS query ids. This is not a CSPRNG, and it is also not seeded by srand() so will generate predictable output. Input from the random number generator is fed into a non-compilant RC4 implementation and may not be as strong as the original RC4 implementation. No attempt is made to look for modern OS-provided CSPRNGs like arc4random() that is widely available. This issue has been fixed in version 1.19.1.

CVE-2023-31147
GHSA-8r8p-23f3-64c2

VCID-pavw-rssx-53cg

Uncontrolled Resource Consumption c-ares is an asynchronous resolver library. c-ares is vulnerable to denial of service. If a target resolver sends a query, the attacker forges a malformed UDP packet with a length of 0 and returns them to the target resolver. The target resolver erroneously interprets the 0 length as a graceful shutdown of the connection. This issue has been patched in version 1.19.1.

CVE-2023-32067
GHSA-9g78-jv2r-p7vc

VCID-vezx-cgbw-zqdp

Buffer Underwrite ('Buffer Underflow') 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.

CVE-2023-31130
GHSA-x6mf-cxr9-8q6v

Date	Actor	Action	Vulnerability	Source	VulnerableCode Version
2026-04-01T13:02:12.008134+00:00	Gentoo Importer	Fixing	VCID-pavw-rssx-53cg	https://security.gentoo.org/glsa/202310-09	38.0.0
2026-04-01T13:02:11.998248+00:00	Gentoo Importer	Fixing	VCID-h5yg-sx9b-ska5	https://security.gentoo.org/glsa/202310-09	38.0.0
2026-04-01T13:02:11.989021+00:00	Gentoo Importer	Fixing	VCID-vezx-cgbw-zqdp	https://security.gentoo.org/glsa/202310-09	38.0.0
2026-04-01T13:02:11.979259+00:00	Gentoo Importer	Fixing	VCID-3nsu-sz9r-pkbf	https://security.gentoo.org/glsa/202310-09	38.0.0