CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
AI Score
Confidence
Low
EPSS
Percentile
61.1%
Issue Overview:
A side-channel attack flaw was found in the way libgcrypt implemented Elgamal encryption. This flaw allows an attacker to decrypt parts of ciphertext encrypted using Elgamal, for example, when using OpenPGP. The highest threat from this vulnerability is to confidentiality. (CVE-2021-33560)
Affected Packages:
libgcrypt
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update libgcrypt to update your system.
New Packages:
aarch64:
libgcrypt-1.5.3-14.amzn2.0.3.aarch64
libgcrypt-devel-1.5.3-14.amzn2.0.3.aarch64
libgcrypt-debuginfo-1.5.3-14.amzn2.0.3.aarch64
i686:
libgcrypt-1.5.3-14.amzn2.0.3.i686
libgcrypt-devel-1.5.3-14.amzn2.0.3.i686
libgcrypt-debuginfo-1.5.3-14.amzn2.0.3.i686
src:
libgcrypt-1.5.3-14.amzn2.0.3.src
x86_64:
libgcrypt-1.5.3-14.amzn2.0.3.x86_64
libgcrypt-devel-1.5.3-14.amzn2.0.3.x86_64
libgcrypt-debuginfo-1.5.3-14.amzn2.0.3.x86_64
Red Hat: CVE-2021-33560
Mitre: CVE-2021-33560
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Amazon Linux | 2 | aarch64 | libgcrypt | < 1.5.3-14.amzn2.0.3 | libgcrypt-1.5.3-14.amzn2.0.3.aarch64.rpm |
Amazon Linux | 2 | aarch64 | libgcrypt-devel | < 1.5.3-14.amzn2.0.3 | libgcrypt-devel-1.5.3-14.amzn2.0.3.aarch64.rpm |
Amazon Linux | 2 | aarch64 | libgcrypt-debuginfo | < 1.5.3-14.amzn2.0.3 | libgcrypt-debuginfo-1.5.3-14.amzn2.0.3.aarch64.rpm |
Amazon Linux | 2 | i686 | libgcrypt | < 1.5.3-14.amzn2.0.3 | libgcrypt-1.5.3-14.amzn2.0.3.i686.rpm |
Amazon Linux | 2 | i686 | libgcrypt-devel | < 1.5.3-14.amzn2.0.3 | libgcrypt-devel-1.5.3-14.amzn2.0.3.i686.rpm |
Amazon Linux | 2 | i686 | libgcrypt-debuginfo | < 1.5.3-14.amzn2.0.3 | libgcrypt-debuginfo-1.5.3-14.amzn2.0.3.i686.rpm |
Amazon Linux | 2 | x86_64 | libgcrypt | < 1.5.3-14.amzn2.0.3 | libgcrypt-1.5.3-14.amzn2.0.3.x86_64.rpm |
Amazon Linux | 2 | x86_64 | libgcrypt-devel | < 1.5.3-14.amzn2.0.3 | libgcrypt-devel-1.5.3-14.amzn2.0.3.x86_64.rpm |
Amazon Linux | 2 | x86_64 | libgcrypt-debuginfo | < 1.5.3-14.amzn2.0.3 | libgcrypt-debuginfo-1.5.3-14.amzn2.0.3.x86_64.rpm |
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
AI Score
Confidence
Low
EPSS
Percentile
61.1%