CVE Vulnerabilities

CVE-2016-7835

Use After Free

Published: Jun 09, 2017 | Modified: Apr 20, 2025
CVSS 3.x
9.1
CRITICAL
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CVSS 2.x
6.4 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:P
RedHat/V2
RedHat/V3
Ubuntu

Use-after-free vulnerability in H2O allows remote attackers to cause a denial-of-service (DoS) or obtain server certificate private keys and possibly other information.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

Name Vendor Start Version End Version
H2o Dena * 2.0.4 (including)
H2o H2o_project 2.1.0-beta3 (including) 2.1.0-beta3 (including)

Potential Mitigations

References