Vulnerability in Citadel Webcit
CVE-2021-37845
An issue was discovered in Citadel through webcit-932. A meddler-in-the-middle attacker can fixate their own session during the cleartext phase before a STARTTLS command (a violation of "The STARTTLS command is only valid in non-authenticated state." in RFC2595). This potentially allows an attacker to cause a victim's e-mail messages to be stored into an attacker's IMAP mailbox, but depends on details of the victim's client behavior.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.007 (50.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
References
- uncensored.citadel.org/dotgoto (Issue Tracking)
- uncensored.citadel.org/msg/2099264259 (Exploit)
- nostarttls.secvuln.info/ (Broken Link)
Frequently asked questions
- What is CVE-2021-37845?
- CVE-2021-37845 is a low-severity vulnerability in Citadel Webcit. CVSS score: 3.7/10. Published 2023-05-29.
- How severe is CVE-2021-37845?
- Low severity. CVSS v3 base score is 3.7 out of 10.