CVE-2019-14855
HIGHCVSS 7.5/10EPSS 1.05%
Last modified
CVE-2019-14855 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 1.05% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Gnupg | Gnupg | < 2.2.18 |
| Fedoraproject | Fedora | 30 |
| Fedoraproject | Fedora | 31 |
| Canonical | Ubuntu Linux | 18.04 |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14855Issue Tracking, Third Party Advisory
- https://dev.gnupg.org/T4755Vendor Advisory
- https://lists.gnupg.org/pipermail/gnupg-announce/2019q4/000442.htmlMailing List, Release Notes, Vendor Advisory
- https://rwc.iacr.org/2020/slides/Leurent.pdfExploit, Third Party Advisory
- https://usn.ubuntu.com/4516-1/Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14855Issue Tracking, Third Party Advisory
- https://dev.gnupg.org/T4755Vendor Advisory
- https://lists.gnupg.org/pipermail/gnupg-announce/2019q4/000442.htmlMailing List, Release Notes, Vendor Advisory
- https://rwc.iacr.org/2020/slides/Leurent.pdfExploit, Third Party Advisory
- https://usn.ubuntu.com/4516-1/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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.
How severe is CVE-2019-14855?
CVE-2019-14855 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.05% probability of exploitation in the next 30 days.
How do I fix CVE-2019-14855?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2019-14855?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST