CVE-2020-15669

EUVD-2020-7656
When aborting an operation, such as a fetch, an abort signal may be deleted while alerting the objects to be notified. This results in a use-after-free and we presume that with enough effort it could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 68.12 and Thunderbird < 68.12.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.8 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 63%
Affected Products (NVD)
VendorProductVersion
mozillafirefox_esr
𝑥
< 68.12
mozillathunderbird
𝑥
< 68.12
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
firefox-esr
bookworm
115.14.0esr-1~deb12u1
fixed
bookworm (security)
128.4.0esr-1~deb12u1
fixed
bullseye
115.14.0esr-1~deb11u1
fixed
bullseye (security)
128.4.0esr-1~deb11u1
fixed
sid
128.4.0esr-1
fixed
trixie
128.3.1esr-2
fixed
thunderbird
bookworm
1:115.12.0-1~deb12u1
fixed
bookworm (security)
1:128.4.0esr-1~deb12u1
fixed
bullseye
1:115.12.0-1~deb11u1
fixed
bullseye (security)
1:128.4.0esr-1~deb11u1
fixed
sid
1:128.4.0esr-1
fixed
trixie
1:128.4.0esr-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
firefox-esr
bionic
dne
focal
dne
groovy
dne
hirsute
dne
impish
dne
jammy
dne
kinetic
dne
lunar
dne
trusty
dne
xenial
dne
thunderbird
bionic
Fixed 1:78.8.1+build1-0ubuntu0.18.04.1
released
focal
Fixed 78.7.1+build1-0ubuntu0.20.04.1
released
groovy
not-affected
hirsute
not-affected
impish
not-affected
jammy
not-affected
kinetic
not-affected
lunar
not-affected
trusty
dne
xenial
ignored
Common Weakness Enumeration
References
https://bugzilla.mozilla.org/show_bug.cgi?id=1656957
https://www.mozilla.org/security/advisories/mfsa2020-37/
https://www.mozilla.org/security/advisories/mfsa2020-40/
https://bugzilla.mozilla.org/show_bug.cgi?id=1656957
https://www.mozilla.org/security/advisories/mfsa2020-37/
https://www.mozilla.org/security/advisories/mfsa2020-40/