GHSA-q2v2-pgm4-m8c8MediumCVSS 4.7
Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA...
🔗 CVE IDs covered (1)
📋 Description
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-ecdsa.c, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.
🔗 References (25)
- https://nvd.nist.gov/vuln/detail/CVE-2018-0495
- https://access.redhat.com/errata/RHSA-2018:3221
- https://access.redhat.com/errata/RHSA-2018:3505
- https://access.redhat.com/errata/RHSA-2019:1296
- https://access.redhat.com/errata/RHSA-2019:1297
- https://access.redhat.com/errata/RHSA-2019:1543
- https://access.redhat.com/errata/RHSA-2019:2237
- https://dev.gnupg.org/T4011
- https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=9010d1576e278a4274ad3f4aa15776c28f6ba965
- https://lists.debian.org/debian-lts-announce/2018/06/msg00013.html
- https://lists.gnupg.org/pipermail/gnupg-announce/2018q2/000426.html
- https://www.debian.org/security/2018/dsa-4231
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
- http://www.securitytracker.com/id/1041144
- http://www.securitytracker.com/id/1041147
- https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem
- https://usn.ubuntu.com/3850-2
- https://usn.ubuntu.com/3850-1
- https://usn.ubuntu.com/3692-2
- https://usn.ubuntu.com/3692-1
- https://usn.ubuntu.com/3689-2
- https://usn.ubuntu.com/3689-1
- https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=9010d1576e278a4274ad3f4aa15776c28f6ba965
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
- https://github.com/advisories/GHSA-q2v2-pgm4-m8c8