CVE-2020-12783
Exim SPA/NTLM Authentication Bypass Vulnerability
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.
INFO
Published Date :
May 11, 2020, 2:15 p.m.
Last Modified :
Nov. 7, 2023, 3:15 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Affected Products
The following products are affected by CVE-2020-12783
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-12783.
| URL | Resource |
|---|---|
| http://www.openwall.com/lists/oss-security/2021/05/04/7 | Exploit Mailing List Third Party Advisory |
| https://bugs.exim.org/show_bug.cgi?id=2571 | Third Party Advisory |
| 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://lists.debian.org/debian-lts-announce/2020/05/msg00017.html | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F6IQQ2SERFUD4WMRSX6XYDNK7Q4GPT7Y/ | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M7Z5UG6ZIG32V7M4PP3BCC65C27EWK7G/ | |
| https://usn.ubuntu.com/4366-1/ | Third Party Advisory |
| https://www.debian.org/security/2020/dsa-4687 | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-12783 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-12783 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F6IQQ2SERFUD4WMRSX6XYDNK7Q4GPT7Y/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M7Z5UG6ZIG32V7M4PP3BCC65C27EWK7G/ [No types assigned] Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/M7Z5UG6ZIG32V7M4PP3BCC65C27EWK7G/ Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/F6IQQ2SERFUD4WMRSX6XYDNK7Q4GPT7Y/ -
Modified Analysis by [email protected]
Nov. 16, 2022
Action Type Old Value New Value Changed Reference Type http://www.openwall.com/lists/oss-security/2021/05/04/7 No Types Assigned http://www.openwall.com/lists/oss-security/2021/05/04/7 Exploit, Mailing List, Third Party Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2020/05/msg00017.html No Types Assigned https://lists.debian.org/debian-lts-announce/2020/05/msg00017.html Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/F6IQQ2SERFUD4WMRSX6XYDNK7Q4GPT7Y/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/F6IQQ2SERFUD4WMRSX6XYDNK7Q4GPT7Y/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/M7Z5UG6ZIG32V7M4PP3BCC65C27EWK7G/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/M7Z5UG6ZIG32V7M4PP3BCC65C27EWK7G/ Mailing List, Third Party Advisory Changed Reference Type https://usn.ubuntu.com/4366-1/ No Types Assigned https://usn.ubuntu.com/4366-1/ Third Party Advisory Changed Reference Type https://www.debian.org/security/2020/dsa-4687 No Types Assigned https://www.debian.org/security/2020/dsa-4687 Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* -
CVE Modified by [email protected]
May. 04, 2021
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2021/05/04/7 [No Types Assigned] -
CVE Modified by [email protected]
May. 24, 2020
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/M7Z5UG6ZIG32V7M4PP3BCC65C27EWK7G/ [No Types Assigned] Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/F6IQQ2SERFUD4WMRSX6XYDNK7Q4GPT7Y/ [No Types Assigned] -
CVE Modified by [email protected]
May. 21, 2020
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/4366-1/ [No Types Assigned] -
CVE Modified by [email protected]
May. 18, 2020
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2020/05/msg00017.html [No Types Assigned] -
CVE Modified by [email protected]
May. 16, 2020
Action Type Old Value New Value Added Reference https://www.debian.org/security/2020/dsa-4687 [No Types Assigned] -
Initial Analysis by [email protected]
May. 13, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:N/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Changed Reference Type https://bugs.exim.org/show_bug.cgi?id=2571 No Types Assigned https://bugs.exim.org/show_bug.cgi?id=2571 Third Party Advisory Changed Reference Type https://git.exim.org/exim.git/commit/57aa14b216432be381b6295c312065b2fd034f86 No Types Assigned https://git.exim.org/exim.git/commit/57aa14b216432be381b6295c312065b2fd034f86 Patch, Third Party Advisory Changed Reference Type https://git.exim.org/exim.git/commit/a04174dc2a84ae1008c23b6a7109e7fa3fb7b8b0 No Types Assigned https://git.exim.org/exim.git/commit/a04174dc2a84ae1008c23b6a7109e7fa3fb7b8b0 Patch, Third Party Advisory Added CWE NIST CWE-125 Added CPE Configuration OR *cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:* versions up to (including) 4.93
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-12783 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-12783
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.25 }} -0.00%
score
0.65781
percentile