Use After Free The advisory has been revoked - it doesn't affect any version of package netcf (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL8-NETCF-1457109
- published26 Jul 2021
- disclosed2 Apr 2020
Introduced: 2 Apr 2020
CVE-2020-1983 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:8.
NVD Description
Note: Versions mentioned in the description apply only to the upstream netcf package and not the netcf package as distributed by RHEL.
A use after free vulnerability in ip_reass() in ip_input.c of libslirp 4.2.0 and prior releases allows crafted packets to cause a denial of service.
References
- https://access.redhat.com/security/cve/CVE-2020-1983
- https://www.debian.org/security/2020/dsa-4665
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HWFD4MWV3YWIHVHSA2F7FKOLJFL4PHOX/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NKT2MTSINE4NUPG5L6BYH6N23NBNITOL/
- https://gitlab.freedesktop.org/slirp/libslirp/-/commit/9ac0371bb8c0a40f5d9f82a1c25129660e81df04
- https://gitlab.freedesktop.org/slirp/libslirp/-/issues/20
- https://lists.debian.org/debian-lts-announce/2020/06/msg00032.html
- https://lists.debian.org/debian-lts-announce/2020/07/msg00020.html
- https://access.redhat.com/errata/RHSA-2020:4676
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00022.html
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00001.html
- https://usn.ubuntu.com/4372-1/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HWFD4MWV3YWIHVHSA2F7FKOLJFL4PHOX/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NKT2MTSINE4NUPG5L6BYH6N23NBNITOL/