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CVE-2021-40528

Description

The ElGamal implementation in Libgcrypt before 1.9.4 allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receivers public key, the generator defined by the receivers public key, and the senders ephemeral exponents can lead to a cross-configuration attack against OpenPGP.

Risk Information

Base Score
5.9
MODERATE
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS Score
Exploitation Probability
0.097

Associated Vulnerability

VulnerabilityOS Platform
LGPL Crypto library (USN-5080-1) libgcrypt20_1.8.1-4ubuntu1.3_i386.debLinux
LGPL Crypto library (USN-5080-1) libgcrypt20_1.8.1-4ubuntu1.3_amd64.debLinux
LGPL Crypto library (USN-5080-1) libgcrypt20_1.8.5-5ubuntu1.1_i386.debLinux
LGPL Crypto library (USN-5080-1) libgcrypt20_1.8.5-5ubuntu1.1_amd64.debLinux
LGPL Crypto library (USN-5080-1) libgcrypt20_1.8.7-2ubuntu2.1_i386.debLinux
LGPL Crypto library (USN-5080-1) libgcrypt20_1.8.7-2ubuntu2.1_amd64.debLinux
Libgcrypt update (ELSA-2022-5311) libgcrypt-1.8.5-7.el8_6.i686.rpmLinux
Libgcrypt update (ELSA-2022-5311) libgcrypt-1.8.5-7.el8_6.x86_64.rpmLinux
Libgcrypt-devel update (ELSA-2022-5311) libgcrypt-devel-1.8.5-7.el8_6.i686.rpmLinux
Libgcrypt-devel update (ELSA-2022-5311) libgcrypt-devel-1.8.5-7.el8_6.x86_64.rpmLinux
(RHSA-2022:5311) libgcrypt security update libgcrypt-1.8.5-7.el8_6.i686.rpmLinux
(RHSA-2022:5311) libgcrypt security update libgcrypt-1.8.5-7.el8_6.x86_64.rpmLinux
(RHSA-2022:5311) libgcrypt security update libgcrypt-debugsource-1.8.5-7.el8_6.i686.rpmLinux
(RHSA-2022:5311) libgcrypt security update libgcrypt-debugsource-1.8.5-7.el8_6.x86_64.rpmLinux
(RHSA-2022:5311) libgcrypt security update libgcrypt-devel-1.8.5-7.el8_6.i686.rpmLinux
(RHSA-2022:5311) libgcrypt security update libgcrypt-devel-1.8.5-7.el8_6.x86_64.rpmLinux
libgcrypt security update (RLSA-2022:5311) libgcrypt-1.8.5-7.el8_6.i686.rpmLinux
libgcrypt security update (RLSA-2022:5311) libgcrypt-1.8.5-7.el8_6.x86_64.rpmLinux
libgcrypt security update (RLSA-2022:5311) libgcrypt-devel-1.8.5-7.el8_6.i686.rpmLinux
libgcrypt security update (RLSA-2022:5311) libgcrypt-devel-1.8.5-7.el8_6.x86_64.rpmLinux
(RHSA-2022:5311)Moderate: security update libgcrypt-debuginfo-1.8.5-7.el8_6.i686.rpmLinux
(RHSA-2022:5311)Moderate: security update libgcrypt-debuginfo-1.8.5-7.el8_6.x86_64.rpmLinux
(RHSA-2022:5311)Moderate: security update libgcrypt-devel-debuginfo-1.8.5-7.el8_6.i686.rpmLinux
(RHSA-2022:5311)Moderate: security update libgcrypt-devel-debuginfo-1.8.5-7.el8_6.x86_64.rpmLinux
Moderate: libgcrypt security update libgcrypt-1.8.5-7.el8_6.i686.rpmLinux
Moderate: libgcrypt security update libgcrypt-1.8.5-7.el8_6.x86_64.rpmLinux
Moderate: libgcrypt security update libgcrypt-devel-1.8.5-7.el8_6.i686.rpmLinux
Moderate: libgcrypt security update libgcrypt-devel-1.8.5-7.el8_6.x86_64.rpmLinux
Use of a Broken or Risky Cryptographic Algorithm Vulnerability (CVE-2021-40528)NCM

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234