CVE-2020-13661
Telerik Fiddler through 5.0.20202.18177 allows attackers to execute arbitrary programs via a hostname with a trailing space character, followed by --utility-and-browser --utility-cmd-prefix= and the pathname of a locally installed program.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.16%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Telerik Fiddler through 5.0.20202.18177 allows attackers to execute arbitrary programs via a hostname with a trailing space character, followed by --utility-and-browser --utility-cmd-prefix= and the pathname of a locally installed program. The victim must interactively choose the Open On Browser option. Fixed in version 5.0.20204.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 1.16% probability · 65th percentile
- CISA KEV
- Not listed
- Affected
- telerik/fiddler
- Source
- cve@mitre.org
References
- https://www.nagenrauft-consulting.com/blog/Not Applicable
- https://www.telerik.com/support/whats-new/fiddler/release-history/fiddler-v5.0.20204Release Notes, Vendor Advisory
- https://www.telerik.com/support/whats-new/release-historyRelease Notes, Vendor Advisory
- https://www.nagenrauft-consulting.com/blog/Not Applicable
- https://www.telerik.com/support/whats-new/fiddler/release-history/fiddler-v5.0.20204Release Notes, Vendor Advisory
- https://www.telerik.com/support/whats-new/release-historyRelease Notes, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.