Out-of-bounds Write Affecting qemu-block-ssh package, versions <2.11.2-9.36.1


Severity

Recommended
medium

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.51% (77th percentile)

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  • Snyk IDSNYK-SLES150-QEMUBLOCKSSH-2710644
  • published14 Apr 2022
  • disclosed3 Jun 2020

Introduced: 3 Jun 2020

CVE-2020-7039  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade SLES:15.0 qemu-block-ssh to version 2.11.2-9.36.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu-block-ssh package and not the qemu-block-ssh package as distributed by SLES. See How to fix? for SLES:15.0 relevant fixed versions and status.

tcp_emu in tcp_subr.c in libslirp 4.1.0, as used in QEMU 4.2.0, mismanages memory, as demonstrated by IRC DCC commands in EMU_IRC. This can cause a heap-based buffer overflow or other out-of-bounds access which can lead to a DoS or potential execute arbitrary code.

CVSS Scores

version 3.1