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CVE-2020-12783

Date: May 11, 2020

Exim through 4.93 has an out-of-bounds read in the SPA authenticator that could result in SPA/NTLM authentication bypass in auths/spa.c and auths/auth-spa.c.

Language: SHELL

Severity Score

7.5

Related Resources (17)

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F6IQQ2SERFUD4WMRSX6XYDNK7Q4GPT7Y/

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

Url: https://nvd.nist.gov/vuln/detail/CVE-2020-12783

Url: https://usn.ubuntu.com/4366-1/

Url: https://www.debian.org/security/2020/dsa-4687

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2020-12783

Url: https://security.alpinelinux.org/vuln/CVE-2020-12783

Url: https://security-tracker.debian.org/tracker/CVE-2020-12783

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M7Z5UG6ZIG32V7M4PP3BCC65C27EWK7G/

Url: https://bugs.exim.org/show_bug.cgi?id=2571

Url: https://git.exim.org/exim.git/commit/57aa14b216432be381b6295c312065b2fd034f86

Url: https://access.redhat.com/security/cve/CVE-2020-12783

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/M7Z5UG6ZIG32V7M4PP3BCC65C27EWK7G/

Url: https://git.exim.org/exim.git/commit/a04174dc2a84ae1008c23b6a7109e7fa3fb7b8b0

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F6IQQ2SERFUD4WMRSX6XYDNK7Q4GPT7Y/

Url: https://lists.debian.org/debian-lts-announce/2020/05/msg00017.html

Url: https://www.mend.io/vulnerability-database/CVE-2020-12783

Severity Score

7.5

Weakness Type (CWE)

Out-of-bounds Read

CWE-125

CVSS v3.1

Base Score:	7.5
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	NONE
Availability (A):	NONE

CVSS v2

Base Score:	5.0
Access Vector (AV):	NETWORK
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	PARTIAL
Integrity (I):	NONE
Availability (A):	NONE
Additional information:

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