CVE-2018-20167
Terminology before 1.3.1 allows Remote Code Execution because popmedia is mishandled, as demonstrated by an unsafe "cat README.md" command when \e}pn is used.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.65%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Terminology before 1.3.1 allows Remote Code Execution because popmedia is mishandled, as demonstrated by an unsafe "cat README.md" command when \e}pn is used. A popmedia control sequence can allow the malicious execution of executable file formats registered in the X desktop share MIME types (/usr/share/applications). The control sequence defers unknown file types to the handle_unknown_media() function, which executes xdg-open against the filename specified in the sequence. The use of xdg-open for all unknown file types allows executable file formats with a registered shared MIME type to be executed. An attacker can achieve remote code execution by introducing an executable file and a plain text file containing the control sequence through a fake software project (e.g., in Git or a tarball). When the control sequence is rendered (such as with cat), the executable file will be run.
- CVSS 3.0
- 7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 2.65% probability · 85th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-74
- Affected
- enlightenment/terminology
- Source
- cve@mitre.org
References
- https://phab.enlightenment.org/T7504Exploit, Mitigation, Vendor Advisory
- https://phab.enlightenment.org/rTRM1ac204da9148e7bccb1b5f34b523e2094dfc39e2Mitigation, Patch, Vendor Advisory
- https://www.enlightenment.org/news/2018-12-16-terminology-1.3.1Mitigation, Vendor Advisory
- https://phab.enlightenment.org/T7504Exploit, Mitigation, Vendor Advisory
- https://phab.enlightenment.org/rTRM1ac204da9148e7bccb1b5f34b523e2094dfc39e2Mitigation, Patch, Vendor Advisory
- https://www.enlightenment.org/news/2018-12-16-terminology-1.3.1Mitigation, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.