rpm package
opensuse/c-ares&distro=openSUSE Tumbleweed
pkg:rpm/opensuse/c-ares&distro=openSUSE%20Tumbleweed
Vulnerabilities (12)
| CVE | Sev | CVSS | KEV | Affected versions | Fixed in | Published | Description |
|---|---|---|---|---|---|---|---|
| CVE-2025-62408 | — | < 1.34.6-1.1 | 1.34.6-1.1 | Dec 8, 2025 | c-ares is an asynchronous resolver library. Versions 1.32.3 through 1.34.5 terminate a query after maximum attempts when using read_answer() and process_answer(), which can cause a Denial of Service. This issue is fixed in version 1.34.6. | ||
| CVE-2025-31498 | Hig | — | < 1.34.5-1.1 | 1.34.5-1.1 | Apr 8, 2025 | c-ares is an asynchronous resolver library. From 1.32.3 through 1.34.4, there is a use-after-free in read_answers() when process_answer() may re-enqueue a query either due to a DNS Cookie Failure or when the upstream server does not properly support EDNS, or possibly on TCP queri | |
| CVE-2024-25629 | Med | 4.4 | < 1.27.0-1.1 | 1.27.0-1.1 | Feb 23, 2024 | c-ares is a C library for asynchronous DNS requests. `ares__read_line()` is used to parse local configuration files such as `/etc/resolv.conf`, `/etc/nsswitch.conf`, the `HOSTALIASES` file, and if using a c-ares version prior to 1.27.0, the `/etc/hosts` file. If any of these conf | |
| CVE-2023-32067 | Hig | 7.5 | < 1.19.1-1.1 | 1.19.1-1.1 | May 25, 2023 | 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 lengt | |
| CVE-2023-31147 | Med | 5.9 | < 1.19.1-1.1 | 1.19.1-1.1 | May 25, 2023 | 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 ra | |
| CVE-2023-31130 | Med | 4.1 | < 1.19.1-1.1 | 1.19.1-1.1 | May 25, 2023 | 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 | |
| CVE-2023-31124 | Low | 3.7 | < 1.19.1-1.1 | 1.19.1-1.1 | May 25, 2023 | 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 | |
| CVE-2022-4904 | Hig | 8.6 | < 1.19.0-2.1 | 1.19.0-2.1 | Mar 6, 2023 | 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-2021-3672 | Med | 5.6 | < 1.17.2-2.2 | 1.17.2-2.2 | Nov 23, 2021 | 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 | |
| CVE-2020-8277 | Hig | 7.5 | < 1.17.2-2.2 | 1.17.2-2.2 | Nov 19, 2020 | A Node.js application that allows an attacker to trigger a DNS request for a host of their choice could trigger a Denial of Service in versions < 15.2.1, < 14.15.1, and < 12.19.1 by getting the application to resolve a DNS record with a larger number of responses. This is fixed i | |
| CVE-2017-1000381 | Hig | 7.5 | < 1.17.2-2.2 | 1.17.2-2.2 | Jul 7, 2017 | The c-ares function `ares_parse_naptr_reply()`, which is used for parsing NAPTR responses, could be triggered to read memory outside of the given input buffer if the passed in DNS response packet was crafted in a particular way. | |
| CVE-2016-5180 | Cri | 9.8 | < 1.12.0-1.1 | 1.12.0-1.1 | Oct 3, 2016 | Heap-based buffer overflow in the ares_create_query function in c-ares 1.x before 1.12.0 allows remote attackers to cause a denial of service (out-of-bounds write) or possibly execute arbitrary code via a hostname with an escaped trailing dot. |
- CVE-2025-62408Dec 8, 2025affected < 1.34.6-1.1fixed 1.34.6-1.1
c-ares is an asynchronous resolver library. Versions 1.32.3 through 1.34.5 terminate a query after maximum attempts when using read_answer() and process_answer(), which can cause a Denial of Service. This issue is fixed in version 1.34.6.
- affected < 1.34.5-1.1fixed 1.34.5-1.1
c-ares is an asynchronous resolver library. From 1.32.3 through 1.34.4, there is a use-after-free in read_answers() when process_answer() may re-enqueue a query either due to a DNS Cookie Failure or when the upstream server does not properly support EDNS, or possibly on TCP queri
- affected < 1.27.0-1.1fixed 1.27.0-1.1
c-ares is a C library for asynchronous DNS requests. `ares__read_line()` is used to parse local configuration files such as `/etc/resolv.conf`, `/etc/nsswitch.conf`, the `HOSTALIASES` file, and if using a c-ares version prior to 1.27.0, the `/etc/hosts` file. If any of these conf
- affected < 1.19.1-1.1fixed 1.19.1-1.1
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 lengt
- affected < 1.19.1-1.1fixed 1.19.1-1.1
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 ra
- affected < 1.19.1-1.1fixed 1.19.1-1.1
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
- affected < 1.19.1-1.1fixed 1.19.1-1.1
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
- affected < 1.19.0-2.1fixed 1.19.0-2.1
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.
- affected < 1.17.2-2.2fixed 1.17.2-2.2
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
- affected < 1.17.2-2.2fixed 1.17.2-2.2
A Node.js application that allows an attacker to trigger a DNS request for a host of their choice could trigger a Denial of Service in versions < 15.2.1, < 14.15.1, and < 12.19.1 by getting the application to resolve a DNS record with a larger number of responses. This is fixed i
- affected < 1.17.2-2.2fixed 1.17.2-2.2
The c-ares function `ares_parse_naptr_reply()`, which is used for parsing NAPTR responses, could be triggered to read memory outside of the given input buffer if the passed in DNS response packet was crafted in a particular way.
- affected < 1.12.0-1.1fixed 1.12.0-1.1
Heap-based buffer overflow in the ares_create_query function in c-ares 1.x before 1.12.0 allows remote attackers to cause a denial of service (out-of-bounds write) or possibly execute arbitrary code via a hostname with an escaped trailing dot.