Debian Security Bug TrackerDEBIANCVE:CVE-2021-40528CVE-2021-40528
2.6 Low
CVSS2
Attack Vector
NETWORK
Attack Complexity
HIGH
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:H/Au:N/C:P/I:N/A:N
5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
0.002 Low
EPSS
Percentile
57.7%
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 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.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Debian | 12 | all | libgcrypt20 | < 1.8.7-6 | libgcrypt20_1.8.7-6_all.deb |
| Debian | 11 | all | libgcrypt20 | < 1.8.7-6 | libgcrypt20_1.8.7-6_all.deb |
| Debian | 10 | all | libgcrypt20 | < 1.8.4-5+deb10u1 | libgcrypt20_1.8.4-5+deb10u1_all.deb |
| Debian | 999 | all | libgcrypt20 | < 1.8.7-6 | libgcrypt20_1.8.7-6_all.deb |
| Debian | 13 | all | libgcrypt20 | < 1.8.7-6 | libgcrypt20_1.8.7-6_all.deb |
Related
2.6 Low
CVSS2
Attack Vector
NETWORK
Attack Complexity
HIGH
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:H/Au:N/C:P/I:N/A:N
5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
0.002 Low
EPSS
Percentile
57.7%