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CVE-2017-16943

Date: November 25, 2017

The receive_msg function in receive.c in the SMTP daemon in Exim 4.88 and 4.89 allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via vectors involving BDAT commands.

Language: C

Severity Score

9.8

Related Resources (15)

Url: https://github.com/LetUsFsck/PoC-Exploit-Mirror/tree/master/CVE-2017-16944

Url: https://nvd.nist.gov/vuln/detail/CVE-2017-16943

Url: http://www.openwall.com/lists/oss-security/2021/05/04/7

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2017-16943

Url: https://git.exim.org/exim.git/commitdiff/4e6ae6235c68de243b1c2419027472d7659aa2b4

Url: https://lists.exim.org/lurker/message/20171125.034842.d1d75cac.en.html

Url: https://security-tracker.debian.org/tracker/CVE-2017-16943

Url: https://bugs.exim.org/show_bug.cgi?id=2199

Url: http://www.securitytracker.com/id/1039872

Url: http://openwall.com/lists/oss-security/2017/11/25/3

Url: http://openwall.com/lists/oss-security/2017/11/25/2

Url: https://www.debian.org/security/2017/dsa-4053

Url: https://git.exim.org/exim.git/commit/4090d62a4b25782129cc1643596dc2f6e8f63bde

Url: http://openwall.com/lists/oss-security/2017/11/25/1

Url: https://www.mend.io/vulnerability-database/CVE-2017-16943

Severity Score

9.8

Weakness Type (CWE)

Use After Free

CWE-416

CVSS v3.1

Base Score:	9.8
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	HIGH
Availability (A):	HIGH

CVSS v2

Base Score:	7.5
Access Vector (AV):	NETWORK
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	PARTIAL
Integrity (I):	PARTIAL
Availability (A):	PARTIAL
Additional information:

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