| 标题 | LibreDWG Project LibreDWG <= 0.14, main branch up to commit 6d6a339 (released 2026-04-10) Heap-based Buffer Overflow (CWE-122) |
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| 描述 | A heap-based buffer overflow vulnerability exists in the LibreDWG library, in versions up to and including 0.14, and the main branch up to commit 6d6a339 (2026-04-10). The vulnerability resides in the read_2004_compressed_section function within src/decode.c at line 2181. This flaw is caused by insufficient length validation on maliciously crafted DWG R2004 compressed section input data. When processing a malformed DWG file, the length of the decoded data exceeds the capacity of the pre-allocated heap buffer, resulting in an out-of-bounds heap write operation during a memcpy call. This issue can be triggered by an attacker providing a specially crafted DWG file to the dwgread utility, leading to a segmentation fault (SEGV) crash and denial of service. Additionally, this issue is suspected to be an incomplete fix for the previously reported vulnerabilities addressed in GitHub issue #126. |
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| 来源 | ⚠️ https://github.com/LibreDWG/libredwg/issues/1241 |
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| 用户 | pwn3rd (UID 97480) |
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| 提交 | 2026-04-27 17時21分 (1 月前) |
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| 管理 | 2026-05-25 12時04分 (28 days later) |
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| 状态 | 已接受 |
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| VulDB条目 | 365482 [GNU LibreDWG 直到 0.14 Dwgread Utility src/decode.c read_2004_compressed_section 内存损坏] |
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| 积分 | 20 |
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