What is CVE-2020-19860?

CVE-2020-19860 is a medium-severity vulnerability in Nlnetlabs Ldns, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2022-01-21.

How severe is CVE-2020-19860?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2020-19860 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Out-of-bounds Read in Nlnetlabs Ldns

CVE-2020-19860

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.

Vulnerability class: Buffer Overflow

EPSS: 0.013 (67.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

Affected products

Nlnetlabs Ldns — versions 1.7.1
N/a — versions n/a

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC, Issue Tracking)
cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-19860?: CVE-2020-19860 is a medium-severity vulnerability in Nlnetlabs Ldns, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2022-01-21.
How severe is CVE-2020-19860?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2020-19860 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.