CVE-2021-34548

An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-003. An attacker can forge RELAY_END or RELAY_RESOLVED to bypass the intended access control for ending a stream.
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:N/A:H
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 25%
VendorProductVersion
torprojecttor
𝑥
< 0.3.5.15
torprojecttor
0.4.0.0 ≤
𝑥
< 0.4.4.9
torprojecttor
0.4.5.0 ≤
𝑥
< 0.4.5.9
torprojecttor
0.4.6.0 ≤
𝑥
< 0.4.6.5
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
tor
bullseye (security)
0.4.5.16-1
fixed
bullseye
0.4.5.16-1
fixed
bookworm
0.4.7.16-1
fixed
bookworm (security)
0.4.7.16-1
fixed
sid
0.4.8.13-2
fixed
trixie
0.4.8.13-2
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
tor
noble
not-affected
mantic
not-affected
lunar
not-affected
kinetic
not-affected
jammy
not-affected
impish
ignored
hirsute
ignored
groovy
ignored
focal
Fixed 0.4.2.7-1ubuntu0.1~esm1
released
bionic
not-affected
xenial
not-affected
trusty
not-affected
Common Weakness Enumeration
References
http://packetstormsecurity.com/files/163510/Tor-Half-Closed-Connection-Stream-Confusion.html
https://blog.torproject.org/node/2041
https://gitlab.torproject.org/tpo/core/tor/-/issues/40389
https://security.gentoo.org/glsa/202107-25
http://packetstormsecurity.com/files/163510/Tor-Half-Closed-Connection-Stream-Confusion.html
https://blog.torproject.org/node/2041
https://gitlab.torproject.org/tpo/core/tor/-/issues/40389
https://security.gentoo.org/glsa/202107-25