CVE-2021-33560

Name
CVE-2021-33560
Description
Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm, and the window size is not chosen appropriately. This, for example, affects use of ElGamal in OpenPGP.
NVD Severity
medium
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
MISC https://dev.gnupg.org/T5466
MISC https://dev.gnupg.org/rCe8b7f10be275bcedb5fc05ed4837a89bfd605c61
MISC https://dev.gnupg.org/T5305
MISC https://dev.gnupg.org/T5328
Mailing List https://lists.debian.org/debian-lts-announce/2021/06/msg00021.html
Third Party Advisory https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R7OAPCUGPF3VLA7QAJUQSL255D4ITVTL/
Third Party Advisory https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BKKTOIGFW2SGN3DO2UHHVZ7MJSYN4AAB/
MISC https://www.oracle.com/security-alerts/cpuoct2021.html
Patch https://www.oracle.com/security-alerts/cpujan2022.html
MISC https://www.oracle.com/security-alerts/cpuapr2022.html

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:* libgcrypt >= None < 1.8.8
cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:* libgcrypt >= 1.9.0 < 1.9.3

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
libgcrypt 3.10-main 1.8.5-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libgcrypt 3.14-main 1.9.4-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
libgcrypt 3.15-main 1.9.4-r0 Natanael Copa <ncopa@alpinelinux.org> fixed