CVE-2023-5388 — Observable Discrepancy in Mozilla Firefox

CWE-203 — Observable DiscrepancyCWE-208 — Observable Timing Discrepancy17 documents9 sources
Severity
6.5MEDIUMNVD
EPSS
0.2%
top 52.21%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
Mozilla FirefoxMozilla Firefox ESRMozilla Thunderbird+2 more
Timeline
PublishedMar 19
Latest updateApr 15

Description

NSS was susceptible to a timing side-channel attack when performing RSA decryption. This attack could potentially allow an attacker to recover the private data. This vulnerability affects Firefox < 124, Firefox ESR < 115.9, and Thunderbird < 115.9.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:LExploitability: 3.9 | Impact: 2.5

Affected Packages8 packages

▶CVEListV5mozilla/firefoxunspecified — 124
▶NVDmozilla/firefox< 115.9.0+1
▶CVEListV5mozilla/firefox_esrunspecified — 115.9
▶CVEListV5mozilla/thunderbirdunspecified — 115.9
▶NVDmozilla/thunderbird< 115.9.0

Also affects: Debian Linux 10.0

🔴Vulnerability Details

7
OSV
nss regression↗2024-04-11
▶
OSV
nss vulnerabilities↗2024-04-10
▶
OSV
thunderbird vulnerabilities↗2024-03-26
▶
OSV
firefox vulnerabilities↗2024-03-20
▶
CVEList
CVE-2023-5388: NSS was susceptible to a timing side-channel attack when performing RSA decryption↗2024-03-19
▶

📋Vendor Advisories

9
Oracle
Oracle Oracle Communications Applications Risk Matrix: Security (NSS) — CVE-2023-5388↗2025-04-15
▶
Ubuntu
NSS vulnerabilities↗2024-04-10
▶
Ubuntu
Thunderbird vulnerabilities↗2024-03-26
▶
Ubuntu
Firefox vulnerabilities↗2024-03-20
▶
Red Hat
nss: timing attack against RSA decryption↗2023-10-12
▶
CVE-2023-5388 — Observable Discrepancy in Mozilla | cvebase