CVE-2018-18584
MEDIUMCVSS 6.5/10EPSS 3.09%
Last modified
CVE-2018-18584 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 3.09% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Cabextract Project | Cabextract | < 1.8 | — |
| Libmspack Project | Libmspack | 0.3 | Alpha |
| Libmspack Project | Libmspack | 0.4 | Alpha |
| Libmspack Project | Libmspack | 0.5 | Alpha |
| Libmspack Project | Libmspack | 0.6 | Alpha |
| Libmspack Project | Libmspack | 0.7 | Alpha |
| Libmspack Project | Libmspack | 0.7.1 | Alpha |
| Debian | Debian Linux | 8.0 | — |
| Redhat | Enterprise Linux | 7.0 | — |
| Canonical | Ubuntu Linux | 12.04 | — |
| Canonical | Ubuntu Linux | 14.04 | — |
| Canonical | Ubuntu Linux | 16.04 | — |
| Canonical | Ubuntu Linux | 18.04 | — |
| Canonical | Ubuntu Linux | 18.10 | — |
| Suse | Linux Enterprise Server | 11 | Sp3 |
| Suse | Linux Enterprise Server | 12 | Ga |
| Starwindsoftware | Starwind Virtual San | All versions | — |
References
- https://access.redhat.com/errata/RHSA-2019:2049Third Party Advisory
- https://bugs.debian.org/911640Mailing List, Third Party Advisory
- https://github.com/kyz/libmspack/commit/40ef1b4093d77ad3a5cfcee1f5cb6108b3a3bcc2Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/10/msg00017.htmlMailing List, Third 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/#changesProduct, Vendor Advisory
- https://www.openwall.com/lists/oss-security/2018/10/22/1Mailing List, Third 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 List, Third Party Advisory
- https://github.com/kyz/libmspack/commit/40ef1b4093d77ad3a5cfcee1f5cb6108b3a3bcc2Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/10/msg00017.htmlMailing List, Third 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/#changesProduct, Vendor Advisory
- https://www.openwall.com/lists/oss-security/2018/10/22/1Mailing List, Third Party Advisory
- https://www.starwindsoftware.com/security/sw-20181213-0001/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-18584?
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 a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 3.09% probability of exploitation in the next 30 days.
How do I fix CVE-2018-18584?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2018-18584?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST