CVE-2018-7548
UnknownEPSS 2.63%
Last modified
CVE-2018-7548 is a vulnerability of currently unknown severity. In subst.c in zsh through 5.4.2, there is a NULL pointer dereference when using ${(PA)...} on an empty array result.. EPSS estimates a 2.63% chance of exploitation in the next 30 days.
Description
In subst.c in zsh through 5.4.2, there is a NULL pointer dereference when using ${(PA)...} on an empty array result.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Zsh | Zsh | <= 5.4.2 |
| Canonical | Ubuntu Linux | 17.10 |
References
- https://security.gentoo.org/glsa/201805-10Third Party Advisory
- https://sourceforge.net/p/zsh/code/ci/110b13e1090bc31ac1352b28adc2d02b6d25a102Patch, Third Party Advisory
- https://usn.ubuntu.com/3593-1/Third Party Advisory
- https://security.gentoo.org/glsa/201805-10Third Party Advisory
- https://sourceforge.net/p/zsh/code/ci/110b13e1090bc31ac1352b28adc2d02b6d25a102Patch, Third Party Advisory
- https://usn.ubuntu.com/3593-1/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-7548?
In subst.c in zsh through 5.4.2, there is a NULL pointer dereference when using ${(PA)...} on an empty array result.
How severe is CVE-2018-7548?
Severity scoring for CVE-2018-7548 is pending analysis. The EPSS model estimates a 2.63% probability of exploitation in the next 30 days.
How do I fix CVE-2018-7548?
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.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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Are you affected by CVE-2018-7548?
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