CVE-2023-22742mediumCWE-347

CVE-2023-22742: falha de média gravidade em libgit2

libgit2 fails to verify SSH keys by default

Publicada em · Atualizada em

Seguir esta CVE+ Monitorar libgit2+ Monitorar libgit2

Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.

13Vexday Risk Score

Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.

ssvc Trackcvss 5.3epss 0.6%
libgit2 is a cross-platform, linkable library implementation of Git. When using an SSH remote with the optional libssh2 backend, libgit2 does not perform certificate checking by default. Prior versions of libgit2 require the caller to set the `certificate_check` field of libgit2's `git_remote_callbacks` structure - if a certificate check callback is not set, libgit2 does not perform any certificate checking. This means that by default - without configuring a certificate check callback, clients will not perform validation on the server SSH keys and may be subject to a man-in-the-middle attack. Users are encouraged to upgrade to v1.4.5 or v1.5.1. Users unable to upgrade should ensure that all relevant certificates are manually checked.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Produtos afetados
libgit2 · libgit2
CVEs relacionadas — libgit2

No mesmo produto, das mais perigosas para as menos.

CVE-2018-10887—CVE-2018-10887EPSS 2.1%CVE-2018-10888—CVE-2018-10888EPSS 1.8%CVE-2024-24577HIGHlibgit2 is vulnerable to arbitrary code execution due to heap corruption in `git_index_add`EPSS 1.5%CVE-2024-24575HIGHlibgit2 is vulnerable to a denial of service attack in `git_revparse_single`EPSS 1.4%CVE-2026-5917HIGHlibgit2 Shell Command Injection via ssh_libssh2 BackendEPSS 1.4%CVE-2026-53587HIGHlibgit2 - Unauthenticated network-reachable heap out-of-bounds read in transports/smart_pkt.c:set_dataEPSS 0.5%