Resource exhaustion in Sympa - CVE-2020-9369
Published: February 24, 2020 / Updated: December 28, 2020
Vulnerability identifier: #VU49166
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-9369
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: sympa.org
Affected software:
Sympa
Sympa
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources. A remote attacker can send a series of requests with malformed parameters and consume all available disk space by creating temporary files.
How to mitigate CVE-2020-9369
Install updates from vendor's website.
Sources
- https://github.com/sympa-community/sympa/issues/886
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6TMVZ5LVYCCIHGEC7RQUMGUE7DJWUXN7/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A3FUYYLV6URRLAJVWXNJYK2CNOKKNHXC/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XO4WJYNNHWM7DUKCN4EWYYYPXZSOI7BQ/
- https://sympa-community.github.io/security/2020-001.html
- https://www.debian.org/security/2020/dsa-4818