Vulnerability in Gnupg Libgcrypt
CVE-2018-0495
Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA signatures that can be mitigated through the use of blinding during the signing process in the _gcry_ecc_ecdsa_sign function in cipher/ecc-ec…
EPSS: 0.009 (55.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Gnupg Libgcrypt
- Oracle Traffic_director — versions 11.1.1.9.0
- Canonical Ubuntu_linux — versions 12.04, 14.04, 16.04
- Debian Debian_linux — versions 8.0, 9.0
- Redhat Ansible_tower — versions 3.3
- Redhat Enterprise_linux_desktop — versions 7.0
- Redhat Enterprise_linux_server — versions 7.0
- Redhat Enterprise_linux_workstation — versions 7.0
- N/a Libgcrypt Before 1.7.10 And 1.8.x 1.8.3 — versions Libgcrypt before 1.7.10 and 1.8.x before 1.8.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@debian.org (x_refsource_MISC)
- security@debian.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
- security@debian.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- security@debian.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
- security@debian.org (Exploit, Third Party Advisory, x_refsource_MISC)
- security@debian.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- security@debian.org (x_refsource_MISC, Vendor Advisory)
- security@debian.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- security@debian.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- security@debian.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-0495?
- CVE-2018-0495 is a medium-severity vulnerability in Gnupg Libgcrypt, classified under Observable Discrepancy. CVSS score: 4.7/10. Published 2018-06-13.
- How severe is CVE-2018-0495?
- Medium severity. CVSS v3 base score is 4.7 out of 10.
- Is CVE-2018-0495 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.