Vulnerability in Libetpan Project
CVE-2020-15953
LibEtPan through 1.9.4, as used in MailCore 2 through 0.6.3 and other products, has a STARTTLS buffering issue that affects IMAP, SMTP, and POP3. When a server sends a "begin TLS" response, the client reads additional data (e.g., from a meddler-in-the-middle attacker) and evaluates it in a TLS context, aka "response injection."
EPSS: 0.024 (82.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.
Affected products
- Libetpan_project Libetpan
- Libmailcore Mailcore2
- Debian Debian_linux — versions 9.0
- Fedoraproject Fedora — versions 31, 32
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Exploit, Patch, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
- cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
- cve@mitre.org (vendor-advisory, Broken Link, x_refsource_SUSE)
- cve@mitre.org (vendor-advisory, Broken Link, x_refsource_SUSE)
Frequently asked questions
- What is CVE-2020-15953?
- CVE-2020-15953 is a high-severity vulnerability in Libetpan Project, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.4/10. Published 2020-07-27.
- How severe is CVE-2020-15953?
- High severity. CVSS v3 base score is 7.4 out of 10.
- Is CVE-2020-15953 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.