2018-06-16
ALT-BU-2018-3310-1
Branch sisyphus update bulletin.
Closed vulnerabilities
Published: 2018-06-13
BDU:2019-00510
Уязвимость функции _gcry_ecc_ecdsa_sign криптографической библиотеки Libgcrypt, позволяющая нарушителю получить несанкционированный доступ к защищаемой информации
Severity: MEDIUM (4.7)
Vector: AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
References:
Published: 2018-06-14
Modified: 2024-11-21
Modified: 2024-11-21
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-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.
Severity: MEDIUM (4.7)
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
References:
- 1041144
- 1041144
- 1041147
- 1041147
- RHSA-2018:3221
- RHSA-2018:3221
- RHSA-2018:3505
- RHSA-2018:3505
- RHSA-2019:1296
- RHSA-2019:1296
- RHSA-2019:1297
- RHSA-2019:1297
- RHSA-2019:1543
- RHSA-2019:1543
- RHSA-2019:2237
- RHSA-2019:2237
- https://dev.gnupg.org/T4011
- https://dev.gnupg.org/T4011
- https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=9010d1576e278a4274ad3f4aa15776c28f6ba965
- https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=9010d1576e278a4274ad3f4aa15776c28f6ba965
- [debian-lts-announce] 20180629 [SECURITY] [DLA 1405-1] libgcrypt20 security update
- [debian-lts-announce] 20180629 [SECURITY] [DLA 1405-1] libgcrypt20 security update
- https://lists.gnupg.org/pipermail/gnupg-announce/2018q2/000426.html
- https://lists.gnupg.org/pipermail/gnupg-announce/2018q2/000426.html
- USN-3689-1
- USN-3689-1
- USN-3689-2
- USN-3689-2
- USN-3692-1
- USN-3692-1
- USN-3692-2
- USN-3692-2
- USN-3850-1
- USN-3850-1
- USN-3850-2
- USN-3850-2
- DSA-4231
- DSA-4231
- https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/
- https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html