CVE-2018-9846: debian debian_linux Improper Input Validation
Vulnerability summary
CVE-2018-9846 is a high (CVSS 8.8) Improper Input Validation vulnerability in debian debian_linux. EPSS estimates a 2.28% chance of exploitation in the next 30 days, higher than 82.9% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 1 · Related 2Timeline
- 07-04-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
2.28%
Chance of exploitation in the next 30 days
Percentile
83%
Versus all other CVEs
30-day change
+0.09 pp
From 2.19% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian2 products
- roundcube< 1.3.6+dfsg.1-1 | < 1.2.3+dfsg.1-4+deb9u2
- debian_linuxEOL9.0
Mageia1 product
- roundcubemail< 1.3.6-1.1.mga6
Roundcube1 product
- webmail≥ 1.2.0, ≤ 1.3.5
Ubuntu1 product
- roundcube< 1.2~beta+dfsg.1-0ubuntu1+esm7
4 vendors · 5 products
References
13 links
- medium.com/%40ndrbasi/cve-2018-9846-roundcube-303097048b0aX Refsource MISC