High severity · published Mar 16, 2020
CVE-2019-19945
uhttpd in OpenWrt through 18.06.5 and 19.x through 19.07.0-rc2 has an integer signedness error
7.5
CVSS
1.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.6% · higher than 75% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
Openwrt · Openwrt
18.06.0 through 18.06.5; 19.07.0; 19.07.0; 19.07.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-19945
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-19945
Patch
https://github.com/openwrt/openwrt/commits/master
Vendor Advisory
https://openwrt.org/advisory/2020-01-13-1
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