CVE-2022-39173

wolfssl: In wolfSSL before 5.5.1, malicious clients can cause a buffer overflow during a TLS 1.3 handshake

CVE-2022-39173 is fixed in wolfssl on 1 platform, first by DEBIAN-CVE-2022-39173, released September 29, 2022. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.5
high
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0576
93rd percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
wolfssl · Debian 12.15 (bookworm) 5.5.3-1 DEBIAN-CVE-2022-39173 Sep 29, 2022
wolfssl · Debian 13.5 (trixie) 5.5.3-1 DEBIAN-CVE-2022-39173 Sep 29, 2022

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