lighttpd up to 1.4.50 use after free

Summaryinfo

A vulnerability was found in lighttpd up to 1.4.50. It has been rated as critical. The affected element is an unknown function. The manipulation leads to use after free. This vulnerability is referenced as CVE-2018-25103. Remote exploitation of the attack is possible. No exploit is available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in lighttpd up to 1.4.50 and classified as critical. This issue affects an unknown function. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

There exists a use-after-free-vulnerability in lighttpd <= 1.4.50 that can allow access to do a case-insensitive comparison against the reused pointer.

It is possible to read the advisory at runzero.com. The identification of this vulnerability is CVE-2018-25103. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

Applying the patch df8e4f95614e476276a55e34da2aa8b00b1148e9 is able to eliminate this problem. The bugfix is ready for download at github.com.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Web Server

Name

• lighttpd

Version

• 1.4.0
• 1.4.1
• 1.4.2
• 1.4.3
• 1.4.4
• 1.4.5
• 1.4.6
• 1.4.7
• 1.4.8
• 1.4.9
• 1.4.10
• 1.4.11
• 1.4.12
• 1.4.13
• 1.4.14
• 1.4.15
• 1.4.16
• 1.4.17
• 1.4.18
• 1.4.19
• 1.4.20
• 1.4.21
• 1.4.22
• 1.4.23
• 1.4.24
• 1.4.25
• 1.4.26
• 1.4.27
• 1.4.28
• 1.4.29
• 1.4.30
• 1.4.31
• 1.4.32
• 1.4.33
• 1.4.34
• 1.4.35
• 1.4.36
• 1.4.37
• 1.4.38
• 1.4.39
• 1.4.40
• 1.4.41
• 1.4.42
• 1.4.43
• 1.4.44
• 1.4.45
• 1.4.46
• 1.4.47
• 1.4.48
• 1.4.49
• 1.4.50

License

• open-source

CPE 2.3info

• 🔍
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CPE 2.2info

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