CVSS: 4.5EPSS: 0%CPEs: 1EXPL: 0CVE-2024-25629 – c-ares out of bounds read in ares__read_line()
https://notcve.org/view.php?id=CVE-2024-25629
23 Feb 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 configuration files has an embedded `NULL` character as the first character in a new line, it can lead to attempting to read memory prior to the start of the given buffer which may result in a crash. This issue is fixed in c-ares 1.27.0... • https://github.com/c-ares/c-ares/commit/a804c04ddc8245fc8adf0e92368709639125e183 • CWE-127: Buffer Under-read •
CVSS: 5.9EPSS: 0%CPEs: 3EXPL: 1CVE-2020-22217 – c-ares: Heap buffer over read in ares_parse_soa_reply
https://notcve.org/view.php?id=CVE-2020-22217
22 Aug 2023 — Buffer overflow vulnerability in c-ares before 1_16_1 thru 1_17_0 via function ares_parse_soa_reply in ares_parse_soa_reply.c. Vulnerabilidad de desbordamiento de búfer en c-ares antes de 1_16_1 a 1_17_0 mediante la función ares_parse_soa_reply en ares_parse_soa_reply.c. A heap buffer over-read flaw was found in c-ares via the ares_parse_soa_reply function in ares_parse_soa_reply.c. It was discovered that c-ares incorrectly parsed certain SOA replies. A remote attacker could possibly use this issue to cause... • https://github.com/c-ares/c-ares/issues/333 • CWE-125: Out-of-bounds Read CWE-126: Buffer Over-read •
CVSS: 7.8EPSS: 2%CPEs: 5EXPL: 0CVE-2023-32067 – 0-byte UDP payload DoS in c-ares
https://notcve.org/view.php?id=CVE-2023-32067
25 May 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 length as a graceful shutdown of the connection. This issue has been patched in version 1.19.1. A vulnerability was found in c-ares. • https://github.com/c-ares/c-ares/releases/tag/cares-1_19_1 • CWE-400: Uncontrolled Resource Consumption •
CVSS: 6.5EPSS: 0%CPEs: 3EXPL: 0CVE-2023-31147 – Insufficient randomness in generation of DNS query IDs in c-ares
https://notcve.org/view.php?id=CVE-2023-31147
25 May 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 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. • https://github.com/c-ares/c-ares/releases/tag/cares-1_19_1 • CWE-330: Use of Insufficiently Random Values •
CVSS: 6.4EPSS: 0%CPEs: 5EXPL: 0CVE-2023-31130 – Buffer Underwrite in ares_inet_net_pton()
https://notcve.org/view.php?id=CVE-2023-31130
25 May 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 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. A vulne... • https://github.com/c-ares/c-ares/releases/tag/cares-1_19_1 • CWE-124: Buffer Underwrite ('Buffer Underflow') CWE-787: Out-of-bounds Write •
CVSS: 3.7EPSS: 0%CPEs: 3EXPL: 0CVE-2023-31124 – AutoTools does not set CARES_RANDOM_FILE during cross compilation
https://notcve.org/view.php?id=CVE-2023-31124
25 May 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 advantage of the lack of entropy by not using a CSPRNG. This issue was patched in version 1.19.1. A flaw was found in c-ares. • https://github.com/c-ares/c-ares/releases/tag/cares-1_19_1 • CWE-330: Use of Insufficiently Random Values •
CVSS: 9.0EPSS: 0%CPEs: 5EXPL: 1CVE-2022-4904 – c-ares: buffer overflow in config_sortlist() due to missing string length check
https://notcve.org/view.php?id=CVE-2022-4904
02 Mar 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. Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language. The package has been upgraded to a later upstream version: nodejs. • https://bugzilla.redhat.com/show_bug.cgi?id=2168631 • CWE-20: Improper Input Validation CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-1284: Improper Validation of Specified Quantity in Input •
CVSS: 6.8EPSS: 0%CPEs: 35EXPL: 1CVE-2021-3672 – c-ares: Missing input validation of host names may lead to domain hijacking
https://notcve.org/view.php?id=CVE-2021-3672
10 Aug 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 and integrity as well as system availability. Se ha encontrado un fallo en la biblioteca c-ares, en la que una falta de comprobación de la comprobación de entrada de los nombres de host devueltos por los DNS (Servidores de Nombres d... • https://bugzilla.redhat.com/show_bug.cgi?id=1988342 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •
CVSS: 3.3EPSS: 0%CPEs: 2EXPL: 2CVE-2020-14354
https://notcve.org/view.php?id=CVE-2020-14354
13 May 2021 — A possible use-after-free and double-free in c-ares lib version 1.16.0 if ares_destroy() is called prior to ares_getaddrinfo() completing. This flaw possibly allows an attacker to crash the service that uses c-ares lib. The highest threat from this vulnerability is to this service availability. Un posible uso de la memoria previamente liberada y una doble liberación en c-ares lib versión 1.16.0, si la función ares_destroy() es llamado antes de completar la función ares_getaddrinfo(). Este fallo posible... • https://bugzilla.redhat.com/show_bug.cgi?id=1866838 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-415: Double Free CWE-416: Use After Free •
CVSS: 7.5EPSS: 62%CPEs: 15EXPL: 2CVE-2020-8277 – c-ares: ares_parse_{a,aaaa}_reply() insufficient naddrttls validation DoS
https://notcve.org/view.php?id=CVE-2020-8277
19 Nov 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 in 15.2.1, 14.15.1, and 12.19.1. Una aplicación Node.js que permite a un atacante desencadenar una petición DNS para un host de su elección podría desencadenar una Denegación de servicio en las versiones anteriores a 15.2.1, versione... • https://github.com/masahiro331/CVE-2020-8277 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-400: Uncontrolled Resource Consumption •