CVE-2018-10115 — Incorrect initialization logic of RAR decoder objects in 7-Zip 18

Incorrect initialization logic of RAR decoder objects in 7-Zip 18.03 and before can lead to usage of uninitialized memory, allowing remote attackers to cause a denial of service (segmentation fault) or execute arbitrary code via a crafted RAR archive.

01What is this vulnerability?

Incorrect initialization logic of RAR decoder objects in 7-Zip 18.03 and before can lead to usage of uninitialized memory, allowing remote attackers to cause a denial of service (segmentation fault) or execute arbitrary code via a crafted RAR archive.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2018-05-02T21:00:00.000Z
• Last modified: 2024-08-05T07:32:01.144Z

09References

• sourceforge.net — https://sourceforge.net/p/sevenzip/discussion/45797/thread/adc65bfa/
• www.securitytracker.com — http://www.securitytracker.com/id/1040832
• www.securityfocus.com — http://www.securityfocus.com/bid/104132
• landave.io — https://landave.io/2018/05/7-zip-from-uninitialized-memory-to-remote-code-execut…