Vulnerability · Published Mar 19, 2021 · Assigned by mitre
CVE-2021-28090
Medium 5.3
In plain English
A medium-severity security flaw in the tor package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.1% (higher than 82% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.3Medium
Exploit odds (30 days)2.1%top 18.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Tor before 0.4.5.7 allows a remote attacker to cause Tor directory authorities to exit with an assertion failure, aka TROVE-2021-002.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | tor | 0.4.5.7-r0 | ALPINE-CVE-2021-28090 |
| Alpine:v3.21 | tor | 0.4.5.7-r0 | ALPINE-CVE-2021-28090 |
| Alpine:v3.22 | tor | 0.4.5.7-r0 | ALPINE-CVE-2021-28090 |
| Alpine:v3.23 | tor | 0.4.5.7-r0 | ALPINE-CVE-2021-28090 |
| Alpine:v3.24 | tor | 0.4.5.7-r0 | ALPINE-CVE-2021-28090 |
| Debian:12 | tor | 0.4.5.7-1 | DEBIAN-CVE-2021-28090 |
| Debian:13 | tor | 0.4.5.7-1 | DEBIAN-CVE-2021-28090 |
| Debian:14 | tor | 0.4.5.7-1 | DEBIAN-CVE-2021-28090 |
Affected products (as reported)
References
- https://gitlab.torproject.org/tpo/core/tor/-/issues/40316 x_refsource_MISC
- https://blog.torproject.org/node/2009 x_refsource_CONFIRM
- https://bugs.torproject.org/tpo/core/tor/40316 x_refsource_CONFIRM
- FEDORA-2021-e68317166d vendor-advisory, x_refsource_FEDORA
- GLSA-202107-25 vendor-advisory, x_refsource_GENTOO