PT-2023-6229 · Mozilla+11 · Thunderbird+14
Hubert Kario
·
Published
2023-10-04
·
Updated
2026-03-30
·
CVE-2023-5388
CVSS v2.0
8.5
High
| Vector | AV:N/AC:L/Au:S/C:C/I:C/A:N |
Name of the Vulnerable Software and Affected Versions
Network Security Services (NSS) versions prior to the fixed version
Firefox versions prior to 124
Firefox ESR versions prior to 115.9
Thunderbird versions prior to 115.9
Description
The issue is related to the implementation of PKCS#1 v1.5, OAEP, and RSASVP standards in the NSS library, which lacks sufficient protection of service data due to a timing discrepancy. This allows a remote attacker to perform a Bleichenbacher or Marvin attack, potentially recovering private data. The vulnerability is also described as a timing side-channel attack when performing RSA decryption.
Recommendations
For NSS, update to a version that includes the fix for this issue.
For Firefox versions prior to 124, update to version 124 or later.
For Firefox ESR versions prior to 115.9, update to version 115.9 or later.
For Thunderbird versions prior to 115.9, update to version 115.9 or later.
As a temporary workaround, consider restricting the use of RSA decryption in the affected software until a patch is available.
Fix
Side Channel Attack
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Related Identifiers
Affected Products
Alt Linux
Almalinux
Astra Linux
Centos
Debian
Firefox
Firefox Esr
Linuxmint
Network Security Services
Red Hat
Red Os
Rocky Linux
Suse
Thunderbird
Ubuntu