Improper Authentication in Sympa - CVE-2020-29668
Published: December 10, 2020 / Updated: December 28, 2020
Vulnerability identifier: #VU49168
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-29668
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an error in when processing authentication requests. A remote attacker can bypass authentication process and obtain full SOAP API access by sending any arbitrary string (except one from an expired cookie) as the cookie value to authenticateAndRun.
Affected software
Sympa
sympa (Debian package)
sympa
Fedora
sympa (Debian package)
sympa
Fedora
How to mitigate CVE-2020-29668
Install updates from vendor's website.
Sympa - update to 6.2.59b.2
sympa (Debian package) - update to 6.2.40~dfsg-1+deb10u1
sympa - addressed in versions 6.2.60-1.el7, 6.2.60-1.fc32, 6.2.60-1.fc33
sympa (Debian package) - update to 6.2.40~dfsg-1+deb10u1
sympa - addressed in versions 6.2.60-1.el7, 6.2.60-1.fc32, 6.2.60-1.fc33
External References
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=976020
- https://github.com/sympa-community/sympa/blob/6.2.59b.2/NEWS.md
- https://github.com/sympa-community/sympa/issues/1041
- https://github.com/sympa-community/sympa/pull/1044
- https://lists.debian.org/debian-lts-announce/2020/12/msg00026.html
- https://www.debian.org/security/2020/dsa-4818