CVE catalog

CVE-2020-24613

wolfssl: CVE-2020-24613

Severity: Medium
Published: Aug 24, 2020, 10:15:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.86% · Oct 25, 2026

wolfSSL before 4.5.0 mishandles TLS 1.3 server data in the WAIT_CERT_CR state, within SanityCheckTls13MsgReceived() in tls13.c. This is an incorrect implementation of the TLS 1.3 client state machine. This allows attackers in a privileged network position to completely impersonate any TLS 1.3 servers, and read or modify potentially sensitive information between clients using the wolfSSL library and these TLS servers.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	wolfssl	sid	`5.9.2-1.2`	fixed
Debian	wolfssl	trixie	`5.7.2-0.1+deb13u2`	fixed
Debian	wolfssl	bookworm	`5.5.4-2+deb12u2`	fixed
Debian	wolfssl	bookworm-security	`5.5.4-2+deb12u3`	fixed
Ubuntu	wolfssl	16.04	`3.4.8+dfsg-1`	vulnerable
Ubuntu	wolfssl	18.04	`3.10.2+dfsg-2`	vulnerable
Ubuntu	wolfssl	18.04	`3.12.0+dfsg-1`	vulnerable
Ubuntu	wolfssl	18.04	`3.12.2+dfsg-1`	vulnerable
Ubuntu	wolfssl	18.04	`3.13.0+dfsg-1`	vulnerable
Ubuntu	wolfssl	20.04	`4.1.0+dfsg-2`	vulnerable
Ubuntu	wolfssl	20.04	`4.2.0+dfsg-1`	vulnerable
Ubuntu	wolfssl	20.04	`4.2.0+dfsg-2`	vulnerable
Ubuntu	wolfssl	20.04	`4.2.0+dfsg-3`	vulnerable
Ubuntu	wolfssl	20.04	`4.3.0+dfsg-2`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	wolfssl	source	sid	`4.5.0+dfsg-1`	not yet assigned	Not reported	[969663]
Debian	wolfssl	source	trixie	`4.5.0+dfsg-1`	not yet assigned	Not reported	[969663]
Debian	wolfssl	source	bookworm	`4.5.0+dfsg-1`	not yet assigned	Not reported	[969663]

[Debian bug #969663]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libwolfssl35]Fixed
Source package: [wolfssl]
Details (4)
- 5.5.4-2+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 4.5.0+dfsg-1
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
- 5.5.4-2+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 4.5.0+dfsg-1
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
- 5.5.4-2+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 4.5.0+dfsg-1
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
- 5.5.4-2+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 4.5.0+dfsg-1
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
[libwolfssl-dev]Fixed
Source package: [wolfssl]
Details (4)
- 5.5.4-2+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 4.5.0+dfsg-1
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
- 5.5.4-2+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 4.5.0+dfsg-1
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
- 5.5.4-2+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 4.5.0+dfsg-1
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
- 5.5.4-2+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 4.5.0+dfsg-1
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12

[Debian 13 (Trixie)]

[libwolfssl42t64]Fixed
Source package: [wolfssl]
Details (2)
- 5.7.2-0.1+deb13u1 · amd64 · trixie
  Fixed · Fixed: 4.5.0+dfsg-1
  dsa · wolfssl · debian · 13
- 5.7.2-0.1+deb13u1 · arm64 · trixie
  Fixed · Fixed: 4.5.0+dfsg-1
  dsa · wolfssl · debian · 13
[libwolfssl-dev]Fixed
Source package: [wolfssl]
Details (2)
- 5.7.2-0.1+deb13u1 · amd64 · trixie
  Fixed · Fixed: 4.5.0+dfsg-1
  dsa · wolfssl · debian · 13
- 5.7.2-0.1+deb13u1 · arm64 · trixie
  Fixed · Fixed: 4.5.0+dfsg-1
  dsa · wolfssl · debian · 13

Observed: Oct 23, 2026, 5:49:20 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]