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CVE-2022-2097

AES OCB fails to encrypt some bytes

Published: Jul 5, 2022Updated: Nov 21, 2024 Sources: CVE List NVD GHSA BDU csafCWE-327
NVD MITRE
5.3CVSSMEDIUM
EPSS Score
2.0%
Top 21.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

AES OCB mode for 32-bit x86 platforms using the AES-NI assembly optimised implementation will not encrypt the entirety of the data under some circumstances. This could reveal sixteen bytes of data that was preexisting in the memory that wasn't written. In the special case of "in place" encryption, sixteen bytes of the plaintext would be revealed. Since OpenSSL does not support OCB based cipher suites for TLS and DTLS, they are both unaffected. Fixed in OpenSSL 3.0.5 (Affected 3.0.0-3.0.4). Fixed in OpenSSL 1.1.1q (Affected 1.1.1-1.1.1p).

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:LI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-327

Affected Products

OpenSSLOpenSSLOSS Libraries
opensslopensslOSS Libraries
fedorafedoraproject
On-premOS
Operating Systems / linux-distro
active iq unified managernetappHardware Firmware
clustered data ontap antivirus connectornetappHardware Firmware
openssloss-projectUSOSS Librariesaka open ssl
fedoraprojectoss-projectUSOperating Systemsaka fedora project
netappcommercialUSHardware Firmware
and 21 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://www.openssl.org/news/secadv/20220705.txt
openssl.org
https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=a98f339ddd7e8f487d6e0088d4a9a42324885a93
git.openssl.org
https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=919925673d6c9cfed3c1085497f5dfbbed5fc431
git.openssl.org
and 48 more references View all →

Timeline

Published
Jul 5, 2022
Last Updated
Nov 21, 2024

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