CVE-2018-10243
CVE-2018-10243 is a critical-severity vulnerability in Oisf Libhtp with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 2% (81st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-125
- Affected product: Oisf Libhtp
- Published:
- Last modified:
Description
htp_parse_authorization_digest in htp_parsers.c in LibHTP 0.5.26 allows remote attackers to cause a heap-based buffer over-read via an authorization digest header.
Frequently asked questions
- What is CVE-2018-10243?
- htp_parse_authorization_digest in htp_parsers.c in LibHTP 0.5.26 allows remote attackers to cause a heap-based buffer over-read via an authorization digest header.
- How severe is CVE-2018-10243?
- CVE-2018-10243 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2018-10243 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-10243?
- CVE-2018-10243 affects Oisf Libhtp. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-10243?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2018-10243 published?
- CVE-2018-10243 was published on 2019-04-04 and last updated on 2026-06-17.
References
- https://lists.debian.org/debian-lts-announce/2019/04/msg00010.html
- https://suricata-ids.org/2018/07/18/suricata-4-0-5-available/
Affected products (1)
- cpe:2.3:a:oisf:libhtp:0.5.26:*:*:*:*:*:*:*
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- CVE-2015-0928 — High (CVSS 7.5): libhtp 0.5.15 allows remote attackers to cause a denial of service (NULL pointer dereference).
- CVE-2019-17420 — Medium (CVSS 5.3): In OISF LibHTP before 0.5.31, as used in Suricata 4.1.4 and other products, an HTTP protocol parsing error causes the…
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