CVE-2019-19977

Published: Dec 26, 2019Modified: Jun 17, 2026

9.8

Vector

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

Exploitability: 3.9 / Impact: 5.9

Source: NVD

Description

libESMTP through 1.0.6 mishandles domain copying into a fixed-size buffer in ntlm_build_type_2 in ntlm/ntlmstruct.c, as demonstrated by a stack-based buffer over-read.

Affected (1)

Products: Libesmtp Project: Libesmtp

Libesmtp Project

1 product

Libesmtp

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Libesmtp Project Libesmtp	Up to 1.0.6

Related CWEs

CWE-125

Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

References (6)

https://github.com/Kirin-say/Vulnerabilities/blob/master/Stack_Overflow_in_libesmtp.md

Source: cve@mitre.org

ExploitPatchThird Party Advisory

https://github.com/jbouse-debian/libesmtp/blob/ca5bd0800ef1da234315da4c59716568eb5e6402/ntlm/ntlmstruct.c#L228-L242

Source: cve@mitre.org

ExploitThird Party Advisory

https://web.archive.org/web/20190528215510/http://brianstafford.info/libesmtp/

Source: cve@mitre.org

Product

https://github.com/Kirin-say/Vulnerabilities/blob/master/Stack_Overflow_in_libesmtp.md

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitPatchThird Party Advisory

https://github.com/jbouse-debian/libesmtp/blob/ca5bd0800ef1da234315da4c59716568eb5e6402/ntlm/ntlmstruct.c#L228-L242

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitThird Party Advisory

https://web.archive.org/web/20190528215510/http://brianstafford.info/libesmtp/

Source: af854a3a-2127-422b-91ae-364da2661108

Product

Timeline

No history available yet.