Vulnerability Description
In mspack/cab.h in libmspack before 0.8alpha and cabextract before 1.8, the CAB block input buffer is one byte too small for the maximal Quantum block, leading to an out-of-bounds write.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cabextract Project | Cabextract | < 1.8 |
| Libmspack Project | Libmspack | 0.3 |
| Debian | Debian Linux | 8.0 |
| Redhat | Enterprise Linux | 7.0 |
| Canonical | Ubuntu Linux | 12.04 |
| Suse | Linux Enterprise Server | 11 |
| Starwindsoftware | Starwind Virtual San | - |
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2019:2049Third Party Advisory
- https://bugs.debian.org/911640Mailing ListThird Party Advisory
- https://github.com/kyz/libmspack/commit/40ef1b4093d77ad3a5cfcee1f5cb6108b3a3bcc2PatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/10/msg00017.htmlMailing ListThird Party Advisory
- https://security.gentoo.org/glsa/201903-20Third Party Advisory
- https://usn.ubuntu.com/3814-1/Third Party Advisory
- https://usn.ubuntu.com/3814-2/Third Party Advisory
- https://usn.ubuntu.com/3814-3/Third Party Advisory
- https://www.cabextract.org.uk/#changesProductVendor Advisory
- https://www.openwall.com/lists/oss-security/2018/10/22/1Mailing ListThird Party Advisory
- https://www.starwindsoftware.com/security/sw-20181213-0001/Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2049Third Party Advisory
- https://bugs.debian.org/911640Mailing ListThird Party Advisory
- https://github.com/kyz/libmspack/commit/40ef1b4093d77ad3a5cfcee1f5cb6108b3a3bcc2PatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/10/msg00017.htmlMailing ListThird Party Advisory
FAQ
What is CVE-2018-18584?
CVE-2018-18584 is a vulnerability with a CVSS score of 6.5 (MEDIUM). In mspack/cab.h in libmspack before 0.8alpha and cabextract before 1.8, the CAB block input buffer is one byte too small for the maximal Quantum block, leading to an out-of-bounds write.
How severe is CVE-2018-18584?
CVE-2018-18584 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-18584?
Check the references section above for vendor advisories and patch information. Affected products include: Cabextract Project Cabextract, Libmspack Project Libmspack, Debian Debian Linux, Redhat Enterprise Linux, Canonical Ubuntu Linux.