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Ubuntu.comUB:CVE-2021-33560HistoryJun 08, 2021 - 12:00 a.m.
CVE-2021-33560
2021-06-0800:00:00
ubuntu.com
ubuntu.com
30
libgcrypt
elgamal encryption
openpgp
side-channel attack
mpi_powm
CVSS2
5
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
7.5
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
EPSS
0.002
Percentile
61.1%
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.
Bugs
Notes
| Author | Note |
|---|---|
| mdeslaur | This CVE was originally for the issue that is now CVE=2021-40528 but somehow got switched to the exponent blinding issue instead. The fix to add exponent blinding appears to only have been added to 1.9.x but never backported to 1.8.x, contrary to the CVE description The commit below was never backported to 1.8.x because the upstream developers consider this hardening and not a security issue. |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | libgcrypt20 | < 1.8.1-4ubuntu1.3 | UNKNOWN |
| ubuntu | 20.04 | noarch | libgcrypt20 | < 1.8.5-5ubuntu1.1 | UNKNOWN |
| ubuntu | 21.04 | noarch | libgcrypt20 | < 1.8.7-2ubuntu2.1 | UNKNOWN |
| ubuntu | 21.10 | noarch | libgcrypt20 | < 1.8.7-5ubuntu2 | UNKNOWN |
| ubuntu | 22.04 | noarch | libgcrypt20 | < 1.8.7-5ubuntu2 | UNKNOWN |
| ubuntu | 22.10 | noarch | libgcrypt20 | < 1.8.7-5ubuntu2 | UNKNOWN |
| ubuntu | 23.04 | noarch | libgcrypt20 | < 1.8.7-5ubuntu2 | UNKNOWN |
| ubuntu | 23.10 | noarch | libgcrypt20 | < 1.8.7-5ubuntu2 | UNKNOWN |
| ubuntu | 24.04 | noarch | libgcrypt20 | < 1.8.7-5ubuntu2 | UNKNOWN |
| ubuntu | 16.04 | noarch | libgcrypt20 | < 1.6.5-2ubuntu0.6+esm1 | UNKNOWN |
Related
openvas
openvas
Huawei EulerOS: Security Advisory for libgcrypt (EulerOS-SA-2021-2503)
2021-09-28 00:00:00
Huawei EulerOS: Security Advisory for libgcrypt (EulerOS-SA-2021-2532)
2021-09-28 00:00:00
Huawei EulerOS: Security Advisory for libgcrypt (EulerOS-SA-2021-2935)
2022-01-02 00:00:00
nessus
nessus
SUSE SLES11 Security Update : libgcrypt (SUSE-SU-2021:14751-1)
2021-06-21 00:00:00
RHEL 8 : libgcrypt (RHSA-2021:4409)
2021-11-11 00:00:00
EulerOS Virtualization 3.0.6.0 : libgcrypt (EulerOS-SA-2022-1074)
2022-02-13 00:00:00
cbl_mariner
cbl_mariner
CVE-2021-33560 affecting package libgcrypt 1.8.7-3
2021-07-08 21:56:34
alpinelinux
alpinelinux
CVE-2021-33560
2021-06-08 11:15:07
oraclelinux
oraclelinux
libgcrypt security and bug fix update
2021-11-16 00:00:00
libgcrypt security update
2022-04-06 00:00:00
debian
debian
[SECURITY] [DLA 2691-1] libgcrypt20 security update
2021-06-24 22:55:50
redhatcve
redhatcve
CVE-2021-33560
2021-06-09 20:15:23
CVE-2021-40528
2021-09-09 19:46:03
debiancve
debiancve
CVE-2021-33560
2021-06-08 11:15:07
amazon
amazon
Medium: libgcrypt
2022-04-04 23:47:00
Medium: libgcrypt
2022-04-04 23:22:00
suse
suse
Security update for libgcrypt (important)
2021-06-25 00:00:00
Security update for libgcrypt (important)
2021-07-11 00:00:00
mageia
mageia
Updated libgcrypt packages fix a security vulnerability
2021-06-29 00:16:35
osv
osv
CVE-2021-33560
2021-06-08 11:15:07
Moderate: libgcrypt security and bug fix update
2021-11-09 09:18:49
Moderate: libgcrypt security and bug fix update
2021-11-09 09:18:49
veracode
veracode
Information Disclosure
2021-05-29 21:17:44
fedora
fedora
[SECURITY] Fedora 33 Update: libgcrypt-1.8.8-1.fc33
2021-06-30 03:33:04
[SECURITY] Fedora 34 Update: libgcrypt-1.9.3-3.fc34
2021-07-01 01:14:42
cve
cve
CVE-2021-33560
2021-06-08 11:15:07
githubexploit
githubexploit
Exploit for Observable Discrepancy in Gnupg Libgcrypt
2021-07-16 15:24:11
almalinux
almalinux
Moderate: libgcrypt security and bug fix update
2021-11-09 09:18:49
rocky
rocky
libgcrypt security and bug fix update
2021-11-09 09:18:49
prion
prion
Code injection
2021-06-08 11:15:00
cvelist
cvelist
CVE-2021-33560
2021-06-08 00:00:00
redhat
redhat
(RHSA-2021:4409) Moderate: libgcrypt security and bug fix update
2021-11-09 09:18:49
(RHSA-2022:0434) Moderate: Release of OpenShift Serverless 1.20.0
2022-02-03 17:07:25
(RHSA-2021:4032) Low: Openshift Logging 5.2.3 bug fix and security update
2021-11-17 03:27:52
nvd
nvd
CVE-2021-33560
2021-06-08 11:15:07
photon
photon
Important Photon OS Security Update - PHSA-2021-0051
2021-06-23 00:00:00
Important Photon OS Security Update - PHSA-2021-0407
2021-06-21 00:00:00
Important Photon OS Security Update - PHSA-2021-4.0-0051
2021-06-23 00:00:00
ubuntu
ubuntu
Libgcrypt vulnerabilities
2021-09-16 00:00:00
Libgcrypt vulnerabilities
2021-09-16 00:00:00
gentoo
gentoo
libgcrypt: Multiple Vulnerabilities
2022-10-31 00:00:00
ubuntucve
ubuntucve
CVE-2021-40528
2021-09-06 00:00:00
cloudfoundry
cloudfoundry
USN-5080-1: Libgcrypt vulnerabilities | Cloud Foundry
2021-10-28 00:00:00
ibm
ibm
oracle
oracle
Oracle Critical Patch Update Advisory - July 2022
2022-07-19 00:00:00
Oracle Critical Patch Update Advisory - October 2021
2021-10-19 00:00:00
Oracle Critical Patch Update Advisory - April 2023
2023-04-18 00:00:00
ics
ics
Siemens SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP V3.1
2023-12-14 12:00:00
avleonov
avleonov
CVSS2
5
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
7.5
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
EPSS
0.002
Percentile
61.1%
Related for UB:CVE-2021-33560