libgcrypt20 1.8.1-4ubuntu1.3: libgcrypt20 1.8.1-4ubuntu1.3 for Ubuntu 18.04.6 LTS (bionic)

libgcrypt20 1.8.1-4ubuntu1.3, released September 6, 2021, fixes 2 CVEs in libgcrypt20. None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.

HighUnsupported product

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

7.5

Base score, 0 to 10

Highest EPSS

0.0237

84th percentile

Priority of the 2 CVEs

Patch now 0
                                Urgent 0
                                High 1
                                Routine 1

Fixed package versions

Product	Release	Fixed in
libgcrypt20	Ubuntu 18.04.6 LTS (bionic)	1.8.1-4ubuntu1.3

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2021-33560	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.	7.5	0.0237	None reported
Routine	CVE-2021-40528	libgcrypt20: The ElGamal implementation in Libgcrypt before 1.9.4 allows plaintextrecovery because, during interaction between two...	5.9	0.0142	None reported

Also fixes CVE-2021-33560

libgcrypt-bin 1.8.7-5ubuntu2
libgcrypt-bin on Ubuntu 25.04 (plucky)
libgcrypt20 1.8.7-5ubuntu2
libgcrypt20 on Ubuntu 25.04 (plucky)
libgcrypt20 1.8.7-5ubuntu2
libgcrypt20 on Ubuntu 24.10 (oracular)
libgcrypt20 1.8.5-5ubuntu1.1
libgcrypt20 on Ubuntu 20.04 LTS (focal)
libgcrypt20 1.8.7-5ubuntu2
libgcrypt20 on Ubuntu 22.04.1 LTS (jammy)
ELSA-2021-4409
libgcrypt, libgcrypt-devel on ol 8
RHSA-2021:4409
libgcrypt, libgcrypt-devel on RHEL 8

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