Medium severity6.5NVD Advisory· Published Dec 19, 2023· Updated Jun 17, 2026
CVE-2023-6865
CVE-2023-6865
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
36<115.6+ 4 more
- (no CPE)range: <115.6
- (no CPE)range: unspecified
- (no CPE)range: unspecified
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*range: <121.0
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*range: <115.6
- osv-coords28 versionspkg:rpm/almalinux/firefoxpkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweedpkg:apk/chainguard/firefox-esrpkg:rpm/almalinux/firefox-x11pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP4pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-ESPOSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2015%20SP4pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2015.4pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2015.5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1
< 115.6.0-1.el8_9.alma+ 27 more
- (no CPE)range: < 115.6.0-1.el8_9.alma
- (no CPE)range: < 121.0-1.1
- (no CPE)range: < 128.5.1-1.1
- (no CPE)range: < 121.0-r0
- (no CPE)range: < 115.6.0-1.el9_3.alma
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-112.194.1
- (no CPE)range: < 115.6.0-112.194.1
- (no CPE)range: < 115.6.0-112.194.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150000.150.119.1
- (no CPE)range: < 115.6.0-150000.150.119.1
- (no CPE)range: < 115.6.0-150000.150.119.1
Patches
Vulnerability mechanics
References
6- lists.debian.org/debian-lts-announce/2023/12/msg00020.htmlnvdMailing ListThird Party Advisory
- security.gentoo.org/glsa/202401-10nvdThird Party Advisory
- www.debian.org/security/2023/dsa-5581nvdThird Party Advisory
- www.mozilla.org/security/advisories/mfsa2023-54/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2023-56/nvdVendor Advisory
- bugzilla.mozilla.org/show_bug.cginvdIssue TrackingPermissions Required
News mentions
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