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CVE-2017-20286— DevIL through 1.8.0 Heap Buffer Overflow via GIF iGetPalette

Quick assessment

Affected
DentonW DevIL
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

DevIL 1.8.0 及更早版本中存在堆缓冲区溢出漏洞，位于 il_gif.cpp 文件的 iGetPalette() 函数中。在加载 GIF 图像时，攻击者可以利用此漏洞向一个 768 字节的调色板缓冲区之外写入数据。攻击者可通过构造一个特制的两帧 GIF 图像，其中第二帧使用处置方法 1（disposal method 1）并包含局部颜色表，从而在堆分配区域之外最多写入 384 个可控字节，可能导致代码执行。

CVSS 7.8 · High EPSS 0.20% · P9

Affected Version Matrix 1

VendorProduct Version RangeStatus
DentonW DevIL ≤ 1.8.0 affected
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I. Basic Information for CVE-2017-20286

Vulnerability Information
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Vulnerability Title
DevIL through 1.8.0 Heap Buffer Overflow via GIF iGetPalette
Source: CVE Program / CVE List V5
Vulnerability Description
DevIL through 1.8.0 contains a heap-based buffer overflow in iGetPalette() in il_gif.cpp that allows attackers to write beyond a 768-byte palette buffer when loading GIF images. Attackers can supply a crafted two-frame GIF whose second frame uses disposal method 1 with a local colour table, writing up to 384 controlled bytes past the heap allocation and possibly executing code.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
DentonW DevIL 0 ~ 1.8.0 -

II. Public POCs for CVE-2017-20286

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III. Intelligence Information for CVE-2017-20286

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Other References for CVE-2017-20286 (4)

IV. Related Vulnerabilities

Same weakness: CWE-787

V. Comments for CVE-2017-20286

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