CVE-2018-11503
CVE-2018-11503 is a medium-severity vulnerability in Discount Project Discount with a CVSS 3.x base score of 5.5. 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: Medium (CVSS 3.x base score 5.5)
- CVSS v2: 4.3
- EPSS exploit prediction: 2% (73rd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-125
- Affected product: Discount Project Discount
- Published:
- Last modified:
Description
The isfootnote function in markdown.c in libmarkdown.a in DISCOUNT 2.2.3a allows remote attackers to cause a denial of service (heap-based buffer over-read) via a crafted file, as demonstrated by mkd2html.
Frequently asked questions
- What is CVE-2018-11503?
- The isfootnote function in markdown.c in libmarkdown.a in DISCOUNT 2.2.3a allows remote attackers to cause a denial of service (heap-based buffer over-read) via a crafted file, as demonstrated by mkd2html.
- How severe is CVE-2018-11503?
- CVE-2018-11503 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2018-11503 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-11503?
- CVE-2018-11503 primarily affects Discount Project Discount. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2018-11503?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2018-11503 published?
- CVE-2018-11503 was published on 2018-05-26 and last updated on 2026-06-17.
References
- https://github.com/Orc/discount/issues/189#issuecomment-392247798
- https://lists.debian.org/debian-lts-announce/2018/09/msg00009.html
- https://www.debian.org/security/2018/dsa-4293
Affected products (3)
- cpe:2.3:a:discount_project:discount:2.2.3:a:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
More vulnerabilities in Discount Project Discount
- CVE-2018-12495 — Medium (CVSS 5.5): The quoteblock function in markdown.c in libmarkdown.a in DISCOUNT 2.2.3a allows remote attackers to cause a denial of…
- CVE-2018-11504 — Medium (CVSS 5.5): The islist function in markdown.c in libmarkdown.a in DISCOUNT 2.2.3a allows remote attackers to cause a denial of…
- CVE-2018-11468 — Medium (CVSS 5.5): The __mkd_trim_line function in mkdio.c in libmarkdown.a in DISCOUNT 2.2.3a allows remote attackers to cause a denial…
All CVEs affecting Discount Project Discount →
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