CVE-2019-11595
In uBlock before 0.9.5.15, the $rewrite filter option allows filter-list maintainers to run arbitrary code in a client-side session when a web service loads a script for execution using XMLHttpRequest or Fetch, and the script origin has an open redirect.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.41%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In uBlock before 0.9.5.15, the $rewrite filter option allows filter-list maintainers to run arbitrary code in a client-side session when a web service loads a script for execution using XMLHttpRequest or Fetch, and the script origin has an open redirect.
- CVSS 3.0
- 9.0 CRITICALCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 2.41% probability · 83th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- ublockorigin/ublock origin
- Source
- cve@mitre.org
References
- https://armin.dev/blog/2019/04/adblock-plus-code-injection/Exploit, Mitigation, Third Party Advisory
- https://news.ycombinator.com/item?id=19666504Third Party Advisory
- https://armin.dev/blog/2019/04/adblock-plus-code-injection/Exploit, Mitigation, Third Party Advisory
- https://news.ycombinator.com/item?id=19666504Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.