CVE Vulnerability

CVE-2019-19945

uhttpd in OpenWrt through 18.06.5 and 19.x through 19.07.0-rc2 has an integer signedness error. This leads to out-of-bounds access to a heap buffer and a subsequent crash. It can be triggered with an HTTP POST request to a CGI script, specifying both "Transfer-Encoding: chunked" and a large negative Content-Length value.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/openwrt/openwrt/commits/master Patch Third Party Advisory
https://openwrt.org/advisory/2020-01-13-1 Vendor Advisory
Configurations

Configuration 1

cpe:2.3:a:openwrt:openwrt:19.07.0:-:*:*:*:*:*:*
cpe:2.3:a:openwrt:openwrt:19.07.0:rc2:*:*:*:*:*:*
cpe:2.3:a:openwrt:openwrt:19.07.0:rc1:*:*:*:*:*:*
cpe:2.3:a:openwrt:openwrt:*:*:*:*:*:*:*:*
Information

Published : 2020-03-16 06:15

Updated : 2020-08-24 05:37

NVD link : CVE-2019-19945

Mitre link : CVE-2019-19945

Products Affected
No products.
CWE
CWE-125

Out-of-bounds Read

CWE-681