CVE-2010-4344
CriticalActively exploited (CISA KEV)
Description
Heap-based buffer overflow in the string_vformat function in string.c in Exim before 4.70 allows remote attackers to execute arbitrary code via an SMTP session that includes two MAIL commands in conjunction with a large message containing crafted headers, leading to improper rejection logging.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Exim
PublishedDec 14, 2010
First seenDec 14, 2010
Added to KEVMar 25, 2022
Weakness typeCWE-787Out-of-bounds write
How to fix
CISA required action
Apply updates per vendor instructions.
CISA due date: Apr 15, 2022Update
- exim exim4.70 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| exim exim | v < 4.70 | 4.70 |
| opensuse opensuse | 11.1, 11.2, 11.3 | — |
| debian debian_linux | 5.0 | — |
| canonical ubuntu_linux | 6.06, 8.04, 9.10 | — |
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