CVE-2023-50781: M2crypto: bleichenbacher timing attacks in the rsa decryption api - incomplete fix for cve-2020-25657

High severity · published Feb 5, 2024

CVE-2023-50781

M2crypto: bleichenbacher timing attacks in the rsa decryption api - incomplete fix for cve-2020-25657

7.5

CVSS

1.1%

EPSS

On KEV

Description

A flaw was found in m2crypto. This issue may allow a remote attacker to decrypt captured messages in TLS servers that use RSA key exchanges, which may lead to exposure of confidential or sensitive data.

CVSS vector

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

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

High

Integrity

None

Availability

None

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)1.1% · higher than 66% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Red Hat Enterprise Linux 6 · Red Hat

All versions, or not specified · source: vendor

Red Hat Enterprise Linux 7 · Red Hat

All versions, or not specified · source: vendor

Red Hat Update Infrastructure 4 for Cloud Providers · Red Hat

All versions, or not specified · source: vendor

Enterprise Linux · Redhat

8.0; 9.0 · source: NVD

M2crypto · M2crypto Project

through 0.40.1 · source: NVD

Update Infrastructure · Redhat

4 · source: NVD

SIMATIC S7-1500 TM MFP - GNU/Linux subsystem · Siemens

before V1.1.1 · source: CISA

Affected product

Red Hat Enterprise Linux 6

Red Hat

All Red Hat Enterprise Linux 6 CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2023-50781

CVE.org

https://www.cve.org/CVERecord?id=CVE-2023-50781

Third Party Advisory

https://access.redhat.com/security/cve/CVE-2023-50781

Issue Tracking

https://bugzilla.redhat.com/show_bug.cgi?id=2254426

Third Party Advisory

https://cert-portal.siemens.com/productcert/html/ssa-265688.html