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CVE-2020-12783

Publication date 11 May 2020

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

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.

Status

Package Ubuntu Release Status
exim4 20.04 LTS focal
Fixed 4.93-13ubuntu1.1
19.10 eoan
Fixed 4.92.1-1ubuntu3.1
18.04 LTS bionic
Fixed 4.90.1-1ubuntu1.5
16.04 LTS xenial
Fixed 4.86.2-2ubuntu2.6
14.04 LTS trusty

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
exim4

Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)

Other references