VulnerabilityModified
CVE-2019-19945
This leads to out-of-bounds access to a heap buffer and a subsequent crash.
HIGH 7.5EPSS 1.55%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.55%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.55% probability · 74th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125, CWE-681
- Affected
- openwrt/openwrt
- Source
- cve@mitre.org
References
- https://github.com/openwrt/openwrt/commits/masterPatch, Third Party Advisory
- https://openwrt.org/advisory/2020-01-13-1Vendor Advisory
- https://github.com/openwrt/openwrt/commits/masterPatch, Third Party Advisory
- https://openwrt.org/advisory/2020-01-13-1Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.