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| purl | pkg:deb/debian/c-ares@1.34.5-1%2Bdeb13u1?distro=trixie |
| Vulnerability | Summary | Fixed by |
|---|---|---|
| This package is not known to be affected by vulnerabilities. | ||
| Vulnerability | Summary | Aliases |
|---|---|---|
| VCID-1xdz-dku3-qqc4 | 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. |
CVE-2021-3672
|
| 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
|
| VCID-3hy7-94d4-kyev | c-ares: Out of bounds read in ares__read_line() |
CVE-2024-25629
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| 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-5vh6-usw6-2qhy | 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. |
CVE-2022-4904
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| VCID-dxnb-c4wc-vqdq | c-ares: c-ares: Denial of Service due to query termination after maximum attempts |
CVE-2025-62408
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| VCID-gx39-xzj1-vfb7 | c-ares: ares_destroy() with pending ares_getaddrinfo() leads to Use-After-Free |
CVE-2020-14354
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| 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-krvu-3d14-yudt | c-ares: Heap buffer over read in ares_parse_soa_reply |
CVE-2020-22217
|
| VCID-kvkw-we2b-zbdn | c-ares: c-ares has a use-after-free in read_answers() |
CVE-2025-31498
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| VCID-m4sn-7wuq-e3cd | A Denial of Service vulnerability was discovered in c-ares. |
CVE-2020-8277
|
| 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 |
| VCID-w3cx-2jcp-pyga | c-ares: NAPTR parser out of bounds access |
CVE-2017-1000381
|