Vulnerability in Gnupg
CVE-2019-14855
A flaw was found in the way certificate signatures could be forged using collisions found in the SHA-1 algorithm. An attacker could use this weakness to create forged certificate signatures. This issue affects GnuPG versions before 2.2.18.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.011 (63.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 63.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000
Affected products
- Gnupg
- Canonical Ubuntu Linux — versions 18.04
- Fedoraproject Fedora — versions 30, 31
- Red Hat Gnupg2 — versions 2.2.18
Weakness classification (CWE)
Public proof-of-concept exploits
References
- usn.ubuntu.com/4516-1/ (vendor-advisory, Third Party Advisory)
- rwc.iacr.org/2020/slides/Leurent.pdf (Exploit, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- lists.gnupg.org/pipermail/gnupg-announce/2019q4/000442.html (Mailing List, Release Notes, Vendor Advisory)
- dev.gnupg.org/T4755 (Vendor Advisory)
Frequently asked questions
- What is CVE-2019-14855?
- CVE-2019-14855 is a high-severity vulnerability in Gnupg, classified under Inadequate Encryption Strength. CVSS score: 7.5/10. Published 2020-03-20.
- How severe is CVE-2019-14855?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2019-14855 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.