CVE-2020-19860 — MEDIUM (6.5)

Vulnerability 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 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Nlnetlabs	Ldns	1.7.1

Related Weaknesses (CWE)

CWE-125

References

https://github.com/NLnetLabs/ldns/commit/15d96206996bea969fbc918eb0a4a346f514b9fPatchThird Party Advisory
https://github.com/NLnetLabs/ldns/issues/50ExploitIssue TrackingThird Party Advisory
https://github.com/NLnetLabs/ldns/commit/15d96206996bea969fbc918eb0a4a346f514b9fPatchThird Party Advisory
https://github.com/NLnetLabs/ldns/issues/50ExploitIssue TrackingThird Party Advisory

FAQ

What is CVE-2020-19860?

CVE-2020-19860 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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...

How severe is CVE-2020-19860?

CVE-2020-19860 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-19860?

Check the references section above for vendor advisories and patch information. Affected products include: Nlnetlabs Ldns.