CVE-2018-5996: Buffer Overflow
First published: Wed Jan 31 2018(Updated: )
Insufficient exception handling in the method NCompress::NRar3::CDecoder::Code of 7-Zip before 18.00 and p7zip can lead to multiple memory corruptions within the PPMd code, allows remote attackers to cause a denial of service (segmentation fault) or execute arbitrary code via a crafted RAR archive.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/p7zip-rar | 16.02-3 | |
| 7-Zip 7-Zip | <18.00 | |
| 7-zip P7zip | <18.0 | |
| Debian Debian Linux | =7.0 | |
| Debian Debian Linux | =8.0 | |
| Debian Debian Linux | =9.0 |
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Reference Links
Frequently Asked Questions
What is CVE-2018-5996?
CVE-2018-5996 is a vulnerability in 7-Zip and p7zip that allows remote attackers to cause a denial of service or execute arbitrary code via a crafted RAR archive, due to insufficient exception handling in the PPMd code.
What is the severity of CVE-2018-5996?
CVE-2018-5996 has a severity rating of 7.8 (high).
How does CVE-2018-5996 affect the affected software?
CVE-2018-5996 affects 7-Zip versions prior to 18.00 and p7zip versions prior to 18.0, as well as the p7zip-rar package version 16.02-3.
Can CVE-2018-5996 be fixed?
Yes, CVE-2018-5996 can be fixed by updating 7-Zip to version 18.00 or newer, updating p7zip to version 18.0 or newer, or applying the remedy provided for the p7zip-rar package version 16.02-3.
Where can I find more information about CVE-2018-5996?
More information about CVE-2018-5996 can be found at the following references: [http://www.securitytracker.com/id/1040831](http://www.securitytracker.com/id/1040831), [https://0patch.blogspot.si/2018/02/two-interesting-micropatches-for-7-zip.html](https://0patch.blogspot.si/2018/02/two-interesting-micropatches-for-7-zip.html), [https://landave.io/2018/01/7-zip-multiple-memory-corruptions-via-rar-and-zip/](https://landave.io/2018/01/7-zip-multiple-memory-corruptions-via-rar-and-zip/)
- collector/security-tracker-debian
- collector/nvd-index
- agent/references
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/author
- agent/weakness
- agent/last-modified-date
- agent/severity
- agent/softwarecombine
- agent/tags
- agent/description
- agent/first-publish-date
- agent/event
- package-manager/debian
- vendor/7-zip
- canonical/7-zip 7-zip
- canonical/7-zip p7zip
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/7.0
- version/debian debian linux/8.0
- version/debian debian linux/9.0