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Package details: pkg:deb/debian/c-ares@1.12.0-1%2Bdeb9u1
purl pkg:deb/debian/c-ares@1.12.0-1%2Bdeb9u1
Next non-vulnerable version 1.34.5-1+deb13u1
Latest non-vulnerable version 1.34.5-1+deb13u1
Risk 3.9
Vulnerabilities affecting this package (8)
Vulnerability Summary Fixed by
VCID-1xdz-dku3-qqc4
Aliases:
CVE-2021-3672
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') A flaw was found in c-ares library, where a missing input validation check of host names returned by DNS (Domain Name Servers) can lead to output of wrong hostnames which might potentially lead to Domain Hijacking. The highest threat from this vulnerability is to confidentiality and integrity as well as system availability.
1.14.0-1+deb10u1
Affected by 7 other vulnerabilities.
1.17.1-1+deb11u3
Affected by 3 other vulnerabilities.
VCID-5vh6-usw6-2qhy
Aliases:
CVE-2022-4904
Improper Input Validation A flaw was found in the c-ares package. The ares_set_sortlist is missing checks about the validity of the input string, which allows a possible arbitrary length stack overflow. This issue may cause a denial of service or a limited impact on confidentiality and integrity.
1.17.1-1+deb11u3
Affected by 3 other vulnerabilities.
VCID-gx39-xzj1-vfb7
Aliases:
CVE-2020-14354
c-ares: ares_destroy() with pending ares_getaddrinfo() leads to Use-After-Free
1.17.1-1+deb11u3
Affected by 3 other vulnerabilities.
VCID-krvu-3d14-yudt
Aliases:
CVE-2020-22217
c-ares: Heap buffer over read in ares_parse_soa_reply
1.17.1-1+deb11u3
Affected by 3 other vulnerabilities.
VCID-m4sn-7wuq-e3cd
Aliases:
CVE-2020-8277
A Denial of Service vulnerability was discovered in c-ares.
1.17.1-1+deb11u3
Affected by 3 other vulnerabilities.
VCID-pavw-rssx-53cg
Aliases:
CVE-2023-32067
GHSA-9g78-jv2r-p7vc
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.
1.17.1-1+deb11u3
Affected by 3 other vulnerabilities.
VCID-vezx-cgbw-zqdp
Aliases:
CVE-2023-31130
GHSA-x6mf-cxr9-8q6v
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.
1.17.1-1+deb11u3
Affected by 3 other vulnerabilities.
VCID-w3cx-2jcp-pyga
Aliases:
CVE-2017-1000381
c-ares: NAPTR parser out of bounds access
1.14.0-1+deb10u1
Affected by 7 other vulnerabilities.
Vulnerabilities fixed by this package (1)
Vulnerability Summary Aliases
VCID-33wk-w9ez-vyd2 A heap-based buffer overflow in c-ares might allow remote attackers to cause a Denial of Service condition. CVE-2016-5180

Date Actor Action Vulnerability Source VulnerableCode Version
2026-04-15T23:19:48.076219+00:00 Debian Oval Importer Affected by VCID-m4sn-7wuq-e3cd https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.4.0
2026-04-15T20:46:26.533521+00:00 Debian Oval Importer Fixing VCID-33wk-w9ez-vyd2 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.4.0
2026-04-15T20:08:14.363380+00:00 Debian Oval Importer Affected by VCID-krvu-3d14-yudt https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.4.0
2026-04-15T18:01:19.553359+00:00 Debian Oval Importer Affected by VCID-5vh6-usw6-2qhy https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.4.0
2026-04-15T17:50:35.293083+00:00 Debian Oval Importer Affected by VCID-1xdz-dku3-qqc4 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.4.0
2026-04-15T16:37:32.762909+00:00 Debian Oval Importer Affected by VCID-pavw-rssx-53cg https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.4.0
2026-04-15T16:28:20.406472+00:00 Debian Oval Importer Affected by VCID-vezx-cgbw-zqdp https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.4.0
2026-04-15T16:23:34.174434+00:00 Debian Oval Importer Affected by VCID-w3cx-2jcp-pyga https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.4.0
2026-04-15T16:14:10.833779+00:00 Debian Oval Importer Affected by VCID-gx39-xzj1-vfb7 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.4.0
2026-04-15T14:52:27.334699+00:00 Debian Oval Importer Affected by VCID-1xdz-dku3-qqc4 https://www.debian.org/security/oval/oval-definitions-buster.xml.bz2 38.4.0
2026-04-11T22:55:25.276639+00:00 Debian Oval Importer Affected by VCID-m4sn-7wuq-e3cd https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.3.0
2026-04-11T20:27:21.758146+00:00 Debian Oval Importer Fixing VCID-33wk-w9ez-vyd2 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.3.0
2026-04-11T19:49:55.232483+00:00 Debian Oval Importer Affected by VCID-krvu-3d14-yudt https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.3.0
2026-04-11T17:47:05.977038+00:00 Debian Oval Importer Affected by VCID-5vh6-usw6-2qhy https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.3.0
2026-04-11T17:36:35.458501+00:00 Debian Oval Importer Affected by VCID-1xdz-dku3-qqc4 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.3.0
2026-04-11T16:24:30.299273+00:00 Debian Oval Importer Affected by VCID-pavw-rssx-53cg https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.3.0
2026-04-11T16:15:30.844981+00:00 Debian Oval Importer Affected by VCID-vezx-cgbw-zqdp https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.3.0
2026-04-11T16:10:49.676061+00:00 Debian Oval Importer Affected by VCID-w3cx-2jcp-pyga https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.3.0
2026-04-11T16:01:33.725266+00:00 Debian Oval Importer Affected by VCID-gx39-xzj1-vfb7 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.3.0
2026-04-11T14:40:42.499345+00:00 Debian Oval Importer Affected by VCID-1xdz-dku3-qqc4 https://www.debian.org/security/oval/oval-definitions-buster.xml.bz2 38.3.0
2026-04-08T22:29:46.670815+00:00 Debian Oval Importer Affected by VCID-m4sn-7wuq-e3cd https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.1.0
2026-04-08T20:07:48.182364+00:00 Debian Oval Importer Fixing VCID-33wk-w9ez-vyd2 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.1.0
2026-04-08T19:32:25.934023+00:00 Debian Oval Importer Affected by VCID-krvu-3d14-yudt https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.1.0
2026-04-08T17:34:19.617923+00:00 Debian Oval Importer Affected by VCID-5vh6-usw6-2qhy https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.1.0
2026-04-08T17:24:05.698940+00:00 Debian Oval Importer Affected by VCID-1xdz-dku3-qqc4 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.1.0
2026-04-08T16:16:11.263663+00:00 Debian Oval Importer Affected by VCID-pavw-rssx-53cg https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.1.0
2026-04-08T16:07:46.624207+00:00 Debian Oval Importer Affected by VCID-vezx-cgbw-zqdp https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.1.0
2026-04-08T16:03:19.393901+00:00 Debian Oval Importer Affected by VCID-w3cx-2jcp-pyga https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.1.0
2026-04-08T15:54:31.711392+00:00 Debian Oval Importer Affected by VCID-gx39-xzj1-vfb7 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.1.0
2026-04-07T23:13:43.717270+00:00 Debian Oval Importer Affected by VCID-1xdz-dku3-qqc4 https://www.debian.org/security/oval/oval-definitions-buster.xml.bz2 38.1.0