CVE-2019-19945: High severity open edx vulnerability
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 Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is CVE-2019-19945?
CVE-2019-19945 is a vulnerability in uhttpd in OpenWrt through 18.06.5 and 19.x through 19.07.0-rc2 that leads to out-of-bounds access to a heap buffer and a subsequent crash.
How does CVE-2019-19945 occur?
CVE-2019-19945 occurs due to an integer signedness error in uhttpd, which can be triggered with an HTTP POST request to a CGI script, specifying both "Transfer-Encoding: chunked" and a large negative value.
Which versions of OpenWrt are affected by CVE-2019-19945?
OpenWrt versions 18.06.0 through 18.06.5 and 19.07.0-rc1 through 19.07.0-rc2 are affected by CVE-2019-19945.
What is the severity of CVE-2019-19945?
CVE-2019-19945 has a severity rating of 7.5 (High).
How can CVE-2019-19945 be fixed?
To fix CVE-2019-19945, it is recommended to upgrade to a patched version of OpenWrt.