CVE-2023-4583

When checking if the Browsing Context had been discarded in `HttpBaseChannel`, if the load group was not available then it was assumed to have already been discarded which was not always the case for private channels after the private session had ended. This vulnerability affects Firefox < 117, Firefox ESR < 115.2, and Thunderbird < 115.2.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
mozillaCNA
---
---
CVEADP
---
---
CISA-ADPADP
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 28%
VendorProductVersion
mozillafirefox
𝑥
< 117.0
mozillafirefox_esr
𝑥
< 115.2
mozillathunderbird
𝑥
< 115.2
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
firefox
sid
133.0.3-1
fixed
bookworm
not-affected
bullseye
not-affected
buster
not-affected
firefox-esr
bullseye
115.14.0esr-1~deb11u1
not-affected
bookworm
128.3.1esr-1~deb12u1
not-affected
buster
not-affected
bullseye (security)
128.5.0esr-1~deb11u1
fixed
bookworm (security)
128.5.0esr-1~deb12u1
fixed
trixie
128.5.0esr-1
fixed
sid
128.5.1esr-1
fixed
thunderbird
bullseye
1:115.12.0-1~deb11u1
not-affected
bookworm
1:115.16.0esr-1~deb12u1
not-affected
buster
not-affected
bullseye (security)
1:128.5.0esr-1~deb11u1
fixed
bookworm (security)
1:128.5.0esr-1~deb12u1
fixed
sid
1:128.5.2esr-1
fixed
trixie
1:128.5.2esr-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
firefox
noble
not-affected
mantic
not-affected
lunar
ignored
jammy
not-affected
focal
Fixed 117.0+build2-0ubuntu0.20.04.1
released
bionic
ignored
xenial
ignored
trusty
ignored
mozjs102
noble
ignored
mantic
ignored
lunar
ignored
jammy
ignored
focal
dne
bionic
dne
xenial
dne
trusty
dne
mozjs38
noble
dne
mantic
dne
lunar
dne
jammy
dne
focal
dne
bionic
ignored
xenial
dne
trusty
dne
mozjs52
noble
dne
mantic
dne
lunar
dne
jammy
dne
focal
ignored
bionic
ignored
xenial
dne
trusty
dne
mozjs68
noble
dne
mantic
dne
lunar
dne
jammy
dne
focal
ignored
bionic
dne
xenial
dne
trusty
dne
mozjs78
noble
dne
mantic
dne
lunar
ignored
jammy
ignored
focal
dne
bionic
dne
xenial
dne
trusty
dne
mozjs91
noble
dne
mantic
dne
lunar
dne
jammy
ignored
focal
dne
bionic
dne
xenial
dne
trusty
dne
thunderbird
noble
Fixed 1:115.2.0+build1-0ubuntu1
released
mantic
Fixed 1:115.2.0+build1-0ubuntu1
released
lunar
Fixed 1:115.3.1+build1-0ubuntu0.23.04.1
released
jammy
Fixed 1:115.3.1+build1-0ubuntu0.22.04.2
released
focal
Fixed 1:115.3.1+build1-0ubuntu0.20.04.1
released
bionic
ignored
xenial
ignored
trusty
ignored