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CVE-2020-37239

libbabl 0.1.62 Broken Double Free Detection Memory Safety

CVSS 9.3 CRITICALEPSS 0.5%CWE-415
libbabl 0.1.62 contains a broken double free detection vulnerability that allows attackers to bypass memory safety checks by exploiting signature overwriting in freed chunks. Attackers can call babl_free() twice on the same pointer without triggering detection, as libc's malloc metadata overwrites babl's signature field upon freeing, enabling potential memory corruption and code execution.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
Gegl · libbabl
public PoCs found — 1
cve_referencewww.exploit-db.com/exploits/49259unverified
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References
https://www.exploit-db.com/exploits/49259https://www.gegl.orghttps://www.gegl.org/babl/https://www.vulncheck.com/advisories/libbabl-broken-double-free-detection-memory-safety