Out-of-bounds Write Affecting wolfssl package, versions <4.6.0+p1-0+deb11u2


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.32% (71st percentile)

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  • Snyk IDSNYK-DEBIAN11-WOLFSSL-3035526
  • published29 Sept 2022
  • disclosed29 Sept 2022

Introduced: 29 Sep 2022

CVE-2022-39173  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Debian:11 wolfssl to version 4.6.0+p1-0+deb11u2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream wolfssl package and not the wolfssl package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

In wolfSSL before 5.5.1, malicious clients can cause a buffer overflow during a TLS 1.3 handshake. This occurs when an attacker supposedly resumes a previous TLS session. During the resumption Client Hello a Hello Retry Request must be triggered. Both Client Hellos are required to contain a list of duplicate cipher suites to trigger the buffer overflow. In total, two Client Hellos have to be sent: one in the resumed session, and a second one as a response to a Hello Retry Request message.

CVSS Scores

version 3.1