VulnerabilityModified
CVE-2019-14855
An attacker could use this weakness to create forged certificate signatures.
HIGH 7.5EPSS 1.08%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.08%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 1.08% probability · 63th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-326
- Affected
- gnupg/gnupg · fedoraproject/fedora · canonical/ubuntu linux
- Source
- secalert@redhat.com
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.