CVE-2020-12783

CVSS V2 Medium 5 CVSS V3 High 7.5
Description
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.
Overview
  • CVE ID
  • CVE-2020-12783
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-05-11T14:15:11
  • Last Modified Date
  • 2022-11-16T03:17:14
Weakness Enumerations
CWE URL
CWE-125 http://cwe.mitre.org/data/definitions/125.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:* 1 OR 4.93
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:P/I:N/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • NONE
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://git.exim.org/exim.git/commit/57aa14b216432be381b6295c312065b2fd034f86 Patch Third Party Advisory
https://git.exim.org/exim.git/commit/a04174dc2a84ae1008c23b6a7109e7fa3fb7b8b0 Patch Third Party Advisory
https://bugs.exim.org/show_bug.cgi?id=2571 Third Party Advisory
https://www.debian.org/security/2020/dsa-4687
https://lists.debian.org/debian-lts-announce/2020/05/msg00017.html
https://usn.ubuntu.com/4366-1/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/M7Z5UG6ZIG32V7M4PP3BCC65C27EWK7G/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F6IQQ2SERFUD4WMRSX6XYDNK7Q4GPT7Y/
http://www.openwall.com/lists/oss-security/2021/05/04/7
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-12783
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12783
History
Created Old Value New Value Data Type Notes
2022-05-10 16:17:37 Added to TrackCVE
2022-12-04 16:21:25 2020-05-11T14:15Z 2020-05-11T14:15:11 CVE Published Date updated
2022-12-04 16:21:25 2022-11-16T03:17:14 CVE Modified Date updated
2022-12-04 16:21:25 Analyzed Vulnerability Status updated