CVE-2020-19860 — Out-of-bounds Read in Ldns

CWE-125 — Out-of-bounds Read9 documents6 sources
Severity
6.5MEDIUMNVD
EPSS
0.1%
top 67.46%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Nlnetlabs LdnsDebian Ldns
Timeline
PublishedJan 21
Latest updateOct 4

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:NExploitability: 2.8 | Impact: 3.6

Affected Packages4 packages

▶debiandebian/ldns< ldns 1.8.1-1 (bookworm)
▶Debiannlnetlabs/ldns< 1.8.1-1+2
▶Ubuntunlnetlabs/ldns< 1.7.0-3ubuntu4.1+3
▶NVDnlnetlabs/ldns1.7.1

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

4
OSV
ldns vulnerabilities↗2022-10-04
▶
OSV
ldns vulnerabilities↗2022-01-31
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GHSA
GHSA-x6hf-28q4-37gq: When ldns version 1↗2022-01-22
▶
OSV
CVE-2020-19860: When ldns version 1↗2022-01-21
▶

📋Vendor Advisories

4
Ubuntu
ldns vulnerabilities↗2022-10-04
▶
Ubuntu
ldns vulnerabilities↗2022-01-31
▶
Red Hat
ldns: heap overread vulnerability via zone file↗2022-01-21
▶
Debian
CVE-2020-19860: ldns - When ldns version 1.7.1 verifies a zone file, the ldns_rr_new_frm_str_internal f...↗2020
▶