Vulnerability in Claws-Mail
CVE-2020-15917
common/session.c in Claws Mail before 3.17.6 has a protocol violation because suffix data after STARTTLS is mishandled.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.026 (85.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.026 · newest: 0.026 · change: 0.000
Affected products
- Claws-Mail
- Fedoraproject Fedora — versions 31, 32
- openSUSE Backports Sle — versions 15.0
- openSUSE Leap — versions 15.1, 15.2
Public proof-of-concept exploits
References
- git.claws-mail.org/
- git.claws-mail.org/
- security.gentoo.org/glsa/202007-56 (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-07/msg00090.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00002.html (vendor-advisory, Mailing List, Third Party Advisory, Broken Link)
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00060.html (vendor-advisory, Mailing List, Third Party Advisory, Broken Link)
- lists.opensuse.org/opensuse-security-announce/2020-09/msg00051.html (vendor-advisory, Mailing List, Third Party Advisory, Broken Link)
- lists.opensuse.org/opensuse-security-announce/2020-11/msg00013.html (vendor-advisory, Mailing List, Third Party Advisory, Broken Link)
Frequently asked questions
- What is CVE-2020-15917?
- CVE-2020-15917 is a critical-severity vulnerability in Claws-Mail. CVSS score: 9.8/10. Published 2020-07-23.
- How severe is CVE-2020-15917?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2020-15917 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.