VulnerabilityModified
CVE-2019-19977
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.
CRITICAL 9.8EPSS 2.94%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.94%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.94% probability · 86th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- libesmtp project/libesmtp
- Source
- cve@mitre.org
References
- https://github.com/Kirin-say/Vulnerabilities/blob/master/Stack_Overflow_in_libesmtp.mdExploit, Patch, Third Party Advisory
- https://github.com/jbouse-debian/libesmtp/blob/ca5bd0800ef1da234315da4c59716568eb5e6402/ntlm/ntlmstruct.c#L228-L242Exploit, Third Party Advisory
- https://web.archive.org/web/20190528215510/http://brianstafford.info/libesmtp/Product
- https://github.com/Kirin-say/Vulnerabilities/blob/master/Stack_Overflow_in_libesmtp.mdExploit, Patch, Third Party Advisory
- https://github.com/jbouse-debian/libesmtp/blob/ca5bd0800ef1da234315da4c59716568eb5e6402/ntlm/ntlmstruct.c#L228-L242Exploit, Third Party Advisory
- https://web.archive.org/web/20190528215510/http://brianstafford.info/libesmtp/Product
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.