CVE-2023-6865 — Use of Uninitialized Resource in Mozilla Firefox

CWE-908 — Use of Uninitialized Resource11 documents8 sources
Severity
6.5MEDIUMNVD
OSV4.3
EPSS
0.7%
top 28.35%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Mozilla FirefoxMozilla Firefox ESRDebian Linux
Timeline
PublishedDec 19
Latest updateJan 11

Description

`EncryptingOutputStream` was susceptible to exposing uninitialized data. This issue could only be abused in order to write data to a local disk which may have implications for private browsing mode. This vulnerability affects Firefox ESR < 115.6 and Firefox < 121.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:NExploitability: 2.8 | Impact: 3.6

Affected Packages5 packages

▶CVEListV5mozilla/firefoxunspecified — 121
▶NVDmozilla/firefox< 121.0
▶CVEListV5mozilla/firefox_esrunspecified — 115.6
▶NVDmozilla/firefox_esr< 115.6
▶Ubuntumozilla/firefox< 121.0+build1-0ubuntu0.20.04.1+1

Also affects: Debian Linux 10.0, 11.0, 12.0

🔴Vulnerability Details

5
OSV
firefox regressions↗2024-01-11
▶
OSV
firefox vulnerabilities↗2024-01-02
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GHSA
GHSA-5c8h-j5h5-r8w3: `EncryptingOutputStream` was susceptible to exposing uninitialized data↗2023-12-19
▶
OSV
CVE-2023-6865: `EncryptingOutputStream` was susceptible to exposing uninitialized data↗2023-12-19
▶
CVEList
CVE-2023-6865: `EncryptingOutputStream` was susceptible to exposing uninitialized data↗2023-12-19
▶

📋Vendor Advisories

5
Ubuntu
Firefox vulnerabilities↗2024-01-02
▶
Red Hat
Mozilla: Potential exposure of uninitialized data in <code>EncryptingOutputStream</code>↗2023-12-19
▶
Debian
CVE-2023-6865: firefox - `EncryptingOutputStream` was susceptible to exposing uninitialized data. This i...↗2023
▶
Mozilla
Mozilla Foundation Security Advisory 2023-54: CVE-2023-6865↗
▶
Mozilla
Mozilla Foundation Security Advisory 2023-56: CVE-2023-6865↗
▶
CVE-2023-6865 — Use of Uninitialized Resource | cvebase