VulnerabilityAnalyzed
CVE-2023-52558
In OpenBSD 7.4 before errata 002 and OpenBSD 7.3 before errata 019, a network buffer that had to be split at certain length that could crash the kernel after receiving specially crafted escape sequences.
HIGH 7.5EPSS 0.70%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.70%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In OpenBSD 7.4 before errata 002 and OpenBSD 7.3 before errata 019, a network buffer that had to be split at certain length that could crash the kernel after receiving specially crafted escape sequences.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.70% probability · 51th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-131
- Affected
- openbsd/openbsd
- Source
- 9119a7d8-5eab-497f-8521-727c672e3725
References
- https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/019_msplit.patch.sigPatch
- https://ftp.openbsd.org/pub/OpenBSD/patches/7.4/common/002_msplit.patch.sigPatch
- https://github.com/openbsd/src/commit/7b4d35e0a60ba1dd4daf4b1c2932020a22463a89Patch
- https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/019_msplit.patch.sigPatch
- https://ftp.openbsd.org/pub/OpenBSD/patches/7.4/common/002_msplit.patch.sigPatch
- https://github.com/openbsd/src/commit/7b4d35e0a60ba1dd4daf4b1c2932020a22463a89Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.