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CVE-2020-28026
AST
Critical

Exim 4 before 4.94.2 has Improper Neutralization of Line Delimiters, relevant in non-default configurations that enable Delivery Status Not…

CVSS
9.8
Critical
EPSS
0.09
p94
Published
2020-01-01
Updated
2020-01-01
Description

Exim 4 before 4.94.2 has Improper Neutralization of Line Delimiters, relevant in non-default configurations that enable Delivery Status Notification (DSN). Certain uses of ORCPT= can place a newline into a spool header file, and indirectly allow unauthenticated remote attackers to execute arbitrary commands as root.

Tags · CWE
Pre-auth
Affected products
Exim 4.00–4.94.2
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Timeline
2020-01-01
Published
2020-01-01
Updated
CVSS 3.1 breakdown
Attack Vector
AV: N
Network (N)
Attack Complexity
AC: L
Low (L)
Privileges Required
PR: N
None (N)
User Interaction
UI: N
None (N)
Scope
S: U
Unchanged (U)
Confidentiality Impact
C: H
High (H)
Integrity Impact
I: H
High (H)
Availability Impact
A: H
High (H)
Exploit indicators
EPSS
0.093 · p94
Known exploited (KEV)
No
Known exploits — Сканер-ВС
No Сканер-ВС checks registered for this vulnerability yet.
Affected products
ProductVendorStatus
exim4Tracked
exim4Tracked
exim4Tracked
exim4Tracked
exim4Tracked
exim4Tracked
exim4Tracked
exim4Tracked
exim4Tracked
exim4Tracked
exim4Tracked
exim4Tracked
exim4Tracked
exim*Tracked
Source databases
AST
DEB
CVE
UBU
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