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: 7.8EPSS: 0%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: 7.5EPSS: 0%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 •
CVSS: 9.8EPSS: 4%CPEs: 32EXPL: 0CVE-2016-5180 – c-ares: Single byte out of buffer write
https://notcve.org/view.php?id=CVE-2016-5180
03 Oct 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. Desbordamiento de búfer basado en memoria dinámica en la función ares_create_query en c-ares 1.x en versiones anteriores a 1.12.0 permite a atacantes remotos provocar una denegación de servicio (escritura fuera de límites) o posiblemente ejecutar código arbitrario a t... • http://rhn.redhat.com/errata/RHSA-2017-0002.html • CWE-122: Heap-based Buffer Overflow CWE-787: Out-of-bounds Write •