Vulnerability Monitor

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CVE-2020-28020

Exim 4 before 4.92 allows Integer Overflow to Buffer Overflow, in which an unauthenticated remote attacker can execute arbitrary code by leveraging the mishandling of continuation lines during header-length restriction.

Published

2021-05-06T13:15:09.613

Last Modified

2024-11-21T05:22:13.213

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Primary
CWE-190

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	exim	exim	< 4.92	Yes

References

http://www.openwall.com/lists/oss-security/2021/07/25/1 Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2021/08/03/1 Mailing List, Third Party Advisory ([email protected])
https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28020-HSIZE.txt Patch, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2021/07/25/1 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2021/08/03/1 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28020-HSIZE.txt Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)