C-Ares Project C-Ares vulnerabilities

CVE-2023-32067 [HIGH] CWE-400 CVE-2023-32067: c-ares is an asynchronous resolver library. c-ares is vulnerable to denial of service. If a target r 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 i

CVE-2023-31130 [MEDIUM] CWE-124 CVE-2023-31130: c-ares is an asynchronous resolver library. ares_inet_net_pton() is vulnerable to a 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(). How

CVE-2023-31147 [MEDIUM] CWE-330 CVE-2023-31147: c-ares is an asynchronous resolver library. When /dev/urandom or RtlGenRandom() are unavailable, c-a 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 an

CVE-2023-31124 [LOW] CWE-330 CVE-2023-31124: c-ares is an asynchronous resolver library. When cross-compiling c-ares and using the autotools buil 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 patc

CVE-2022-4904 [HIGH] CWE-20 CVE-2022-4904: A flaw was found in the c-ares package. The ares_set_sortlist is missing checks about the validity o 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 [MEDIUM] CWE-79 CVE-2021-3672: A flaw was found in c-ares library, where a missing input validation check of host names returned by 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-2020-8277 [HIGH] CWE-400 CVE-2020-8277: A Node.js application that allows an attacker to trigger a DNS request for a host of their choice co 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 in 15.2.1, 14.15.1, and 12.19.1.

CVE-2017-1000381 [HIGH] CWE-200 CVE-2017-1000381: The c-ares function `ares_parse_naptr_reply()`, which is used for parsing NAPTR responses, could be 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 [CRITICAL] CWE-787 CVE-2016-5180: Heap-based buffer overflow in the ares_create_query function in c-ares 1.x before 1.12.0 allows remo 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.