Post from 2024-12-26 16:38:33

I find CVE-2024-40896 (Raptor/libxml2 XXE) very educational:

Based on the analysis[1] it's a nice example of Chesterton’s Fence[2], while its discovery[3] underlines the importance of automated testing for regressions and known dangerous behavior.

[1] https://www.openwall.com/lists/oss-security/2024/12/25/2 (thx @alexandreborges for sharing!)
[2] https://fs.blog/chestertons-fence/
[3] https://gitlab.gnome.org/GNOME/libxml2/-/issues/761
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