Vulnerability · Published Jan 21, 2022 · Assigned by mitre
CVE-2020-19860
Medium 6.5
In plain English
A medium-severity security flaw in the ldns package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 69% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)1.2%top 31.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
When ldns version 1.7.1 verifies a zone file, the ldns_rr_new_frm_str_internal function has a heap out of bounds read vulnerability. An attacker can leak information on the heap by constructing a zone file payload.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | ldns | 1.8.1-1 | DEBIAN-CVE-2020-19860 |
| Debian:13 | ldns | 1.8.1-1 | DEBIAN-CVE-2020-19860 |
| Debian:14 | ldns | 1.8.1-1 | DEBIAN-CVE-2020-19860 |
Affected products (as reported)
References
- https://github.com/NLnetLabs/ldns/issues/50 x_refsource_MISC
- https://github.com/NLnetLabs/ldns/commit/15d96206996bea969fbc918eb0a4a346f514b9f3 x_refsource_MISC