Security Bulletin
This security bulletin contains one medium risk vulnerability.
EUVDB-ID: #VU49168
Risk: Medium
CVSSv4.0: 2.7 [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/E:U/U:Green]
CVE-ID: CVE-2020-29668
CWE-ID:
CWE-287 - Improper Authentication
Exploit availability: No
DescriptionThe 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.
MitigationInstall updates from vendor's website.
Vulnerable software versionsSympa: 6.2.50 - 6.2.59b.1
CPE2.3https://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
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.