Deserialization in Squirrelmail
CVE-2020-14933
compose.php in SquirrelMail 1.4.22 calls unserialize for the $attachments value, which originates from an HTTP POST request. NOTE: the vendor disputes this because these two conditions for PHP object injection are not satisfied: existence of a PHP magic method (such as __wakeup or __destruct), and any attack-relevant classes must be declared before unserialize is called (or must be autoloaded).
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.014 (71.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 71.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000
Affected products
- Squirrelmail — versions 1.4.22
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.openwall.com/lists/oss-security/2020/06/20/1 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-14933?
- CVE-2020-14933 is a high-severity vulnerability in Squirrelmail, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2020-06-20.
- How severe is CVE-2020-14933?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2020-14933 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.