Improper input validation in Roundcube Webmail
CVE-2018-9846
In Roundcube from versions 1.2.0 to 1.3.5, with the archive plugin enabled and configured, it's possible to exploit the unsanitized, user-controlled "_uid" parameter (in an archive.php _task=mail&_mbox=INBOX&_action=plugin.move2archive request) to perform an MX (IMAP) injection attack by placing an IMAP command after a %0d%0a sequence. NOTE: this is less easily exploitable in 1.3.4 and later because of a Same Origin Policy protection mechanism.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.022 (81.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: -0.000
Affected products
- Roundcube Webmail
- Debian Linux — versions 9.0
Weakness classification (CWE)
References
- github.com/roundcube/roundcubemail/issues/6238 (Patch, Third Party Advisory)
- www.debian.org/security/2018/dsa-4181 (vendor-advisory, Third Party Advisory)
- github.com/roundcube/roundcubemail/issues/6229 (Patch, Third Party Advisory)
- medium.com/@ndrbasi/cve-2018-9846-roundcube-303097048b0a
Frequently asked questions
- What is CVE-2018-9846?
- CVE-2018-9846 is a high-severity vulnerability in Roundcube Webmail, classified under Improper Input Validation. CVSS score: 8.8/10. Published 2018-04-07.
- How severe is CVE-2018-9846?
- High severity. CVSS v3 base score is 8.8 out of 10.