CVE-2018-18751
UnknownEPSS 4.29%
Last modified
CVE-2018-18751 is a vulnerability of currently unknown severity. An issue was discovered in GNU gettext 0.19.8. There is a double free in default_add_message in read-catalog.c, related to an invalid free in po_gram_parse in po-gram-gen.y, as demonstrated by lt-msgfmt.. EPSS estimates a 4.29% chance of exploitation in the next 30 days.
Description
An issue was discovered in GNU gettext 0.19.8. There is a double free in default_add_message in read-catalog.c, related to an invalid free in po_gram_parse in po-gram-gen.y, as demonstrated by lt-msgfmt.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Gnu | Gettext | 0.19.8 |
| 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 |
| Redhat | Enterprise Linux | 7.0 |
References
- https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/doublefreeExploit, Third Party Advisory
- https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/heapcorruptionExploit, Third Party Advisory
- https://usn.ubuntu.com/3815-1/Third Party Advisory
- https://usn.ubuntu.com/3815-2/Third Party Advisory
- https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/doublefreeExploit, Third Party Advisory
- https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/heapcorruptionExploit, Third Party Advisory
- https://usn.ubuntu.com/3815-1/Third Party Advisory
- https://usn.ubuntu.com/3815-2/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-18751?
An issue was discovered in GNU gettext 0.19.8. There is a double free in default_add_message in read-catalog.c, related to an invalid free in po_gram_parse in po-gram-gen.y, as demonstrated by lt-msgfmt.
How severe is CVE-2018-18751?
Severity scoring for CVE-2018-18751 is pending analysis. The EPSS model estimates a 4.29% probability of exploitation in the next 30 days.
How do I fix CVE-2018-18751?
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-2018-18751?
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