Vulnerability · NVD

CVE-2021-40529

CVE-2021-40529, medium severity (CVSS 5.9): 1 tracked app concerned, all fixed or indeterminable on their current version.

Severity (CVSS): 5.9
Exploitation: 1.5 %
Tracked apps: 1
Still exposed: 0

Published on 2021-09-06

The ElGamal implementation in Botan through 2.18.1, as used in Thunderbird and other products, allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defined by the receiver's public key, and the sender's ephemeral exponents can lead to a cross-configuration attack against OpenPGP.

Attack vector : Network No privileges required No user interaction

Show raw CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS 1.53% above median percentile 73.8%

Tracked apps referencing this CVE

For each app: the affected range, the fixing version, and where the tracked app stands today.

Mozilla Thunderbird Windows winget:Mozilla.Thunderbird

Affected <91.12.0 Fixed in 91.12.0 Latest tracked 157.0 patched

Observed affected builds (37)

91.9.1 91.9.0 91.8.1 91.8.0 91.7.0 91.6.1 91.6.0 91.5.1 91.5.0 91.4.1 91.4.0 91.3.2 91.3.1 91.3.0 91.2.1 91.2.0 91.1.2 91.0.3 78.12.0 78.11.0 78.10.2 78.10.1 78.10.0 78.9.1 78.8.1 78.7.1 78.6.1 78.4.0 78.3.2 78.2.1 +7 · see history

Vulnerable CPE configurations (1)

Vendor	Product	Platform	Versions	CPE 2.3 URI
mozilla	thunderbird All platforms (wildcard)	All platforms (wildcard)	<91.12.0	cpe:2.3:a:mozilla:thunderbird::::::::

View on NVD ↗ Advisory · github.com

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