Vulnerability · Published Mar 2, 2022 · Assigned by redhat
CVE-2021-4076
High 7.5
In plain English
A high-severity information exposure in tang. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.6% (higher than 75% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.6%top 24.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A flaw exists in tang, a network-based cryptographic binding server, which could result in leak of private keys.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | tang | 11-1 | DEBIAN-CVE-2021-4076 |
| Debian:13 | tang | 11-1 | DEBIAN-CVE-2021-4076 |
| Debian:14 | tang | 11-1 | DEBIAN-CVE-2021-4076 |
| Ubuntu:22.04:LTS | tang | 11-1 | UBUNTU-CVE-2021-4076 |
Affected products (as reported)
Weakness: CWE-200
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2029814 x_refsource_MISC
- https://github.com/latchset/tang/pull/81 x_refsource_MISC
- https://github.com/latchset/tang/commit/e82459fda10f0630c3414ed2afbc6320bb9ea7c9 x_refsource_MISC