CVEvulnerability

CVE-2019-19945

7.5 HIGH Published 2020-03-16 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-03-16
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
Weaknesses
CWE-125, CWE-681

Description

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.

Affected configurations

• openwrt openwrt (>= 18.06.0 <= 18.06.5) • openwrt openwrt 19.07.0

Related

Weakness · CWE (2)

  • CWE-125 Out-of-bounds Read weakness
  • CWE-681 Incorrect Conversion between Numeric Types weakness

References