Md4C
CVE-2018-11536
CRITICAL
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
1DescriptionNVD
md4c before 0.2.5 has a heap-based buffer overflow because md_split_simple_pairing_mark mishandles splits.
AnalysisAI
md4c before 0.2.5 has a heap-based buffer overflow because md_split_simple_pairing_mark mishandles splits. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Technical ContextAI
This vulnerability is classified as Out-of-bounds Write (CWE-787), which allows attackers to write data beyond allocated buffer boundaries leading to code execution or crashes. md4c before 0.2.5 has a heap-based buffer overflow because md_split_simple_pairing_mark mishandles splits. Affected products include: Md4C Project Md4C. Version information: before 0.2.5.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate write boundaries, use memory-safe languages, enable compiler protections (ASLR, stack canaries).
md_build_attribute in md4c.c in md4c 0.2.6 allows remote attackers to cause a denial of service (Segmentation fault and
md_push_block_bytes in md4c.c in md4c 0.4.5 allows attackers to trigger use of uninitialized memory, and cause a denial
md_is_link_reference_definition_helper in md4c 0.2.5 has a heap-based buffer over-read because md_is_link_label mishandl
md4c 0.2.5 has a heap-based buffer over-read because md_is_named_entity_contents has an off-by-one error. Rated critical
md4c 0.2.5 has a heap-based buffer overflow in md_merge_lines because md_is_link_label mishandles the case of a link lab
md_analyze_line in md4c.c in md4c 0.4.7 allows attackers to trigger use of uninitialized memory, and cause a denial of s
md4c 0.2.6 has a NULL pointer dereference in the function md_process_line in md4c.c, related to ctx->current_block. Rate
Same weakness CWE-787 – Out-of-bounds Write
View allSame technique Memory Corruption
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External POC / Exploit Code
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