CVE-2021-45955
dnsmasq: heap-based buffer overflow in resize_packet
Sévérité par source
Le label propre à Trivy est CRITICAL. Critique selon NVD, CBL-Mariner.
Description
Dnsmasq 2.86 has a heap-based buffer overflow in resize_packet (called from FuzzResizePacket and fuzz_rfc1035.c) because of the lack of a proper bounds check upon pseudo header re-insertion. NOTE: the vendor's position is that CVE-2021-45951 through CVE-2021-45957 "do not represent real vulnerabilities, to the best of our knowledge." However, a contributor states that a security patch (mentioned in 016162.html) is needed
Paquets affectés et versions corrigées
| Source | Paquet | Corrigé en |
|---|---|---|
| CBL-Mariner 2.0 | dnsmasq | 0:2.89-2.cm2 |
Références
- https://access.redhat.com/security/cve/CVE-2021-45955
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35898
- https://github.com/google/oss-fuzz-vulns/blob/main/vulns/dnsmasq/OSV-2021-932.yaml
- https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016162.html
- https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016164.html
- https://nvd.nist.gov/vuln/detail/CVE-2021-45955
- https://www.cve.org/CVERecord?id=CVE-2021-45955