Vulnerability Information
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
N/A
Vulnerability Description
In Xpdf 4.02, SplashOutputDev::endType3Char(GfxState *state) SplashOutputDev.cc:3079 is trying to use the freed `t3GlyphStack->cache`, which causes an `heap-use-after-free` problem. The codes of a previous fix for nested Type 3 characters wasn't correctly handling the case where a Type 3 char referred to another char in the same Type 3 font.
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
Vulnerability Type
释放后使用
Vulnerability Title
Xpdf 资源管理错误漏洞
Vulnerability Description
Xpdf是Foo实验室的一款开源的PDF阅读器。该产品支持解码LZW压缩格式的文件以及阅读加密的PDF文件。 Xpdf 4.02 存在安全漏洞，该漏洞源于 SplashOutputDev::endType3Char(GfxState *state) SplashOutputDev.cc:3079 尝试使用 `t3GlyphStack->cache`，这就导致了“免堆后使用”的问题。以前针对嵌套类型3字符的修复代码没有正确处理类型3字符引用相同类型3字体的另一个字符的情况。
CVSS Information
N/A
Vulnerability Type
N/A