Vulnerability in stalniy @casl/ability

[ Description ]Official description

@casl/ability 6.7.5 before 7.0.2 contains a prototype pollution vulnerability in rulesToFields() that allows attackers to modify inherited builtins via dotted condition keys. Attackers controlling rule conditions can supply keys like 'toString.call' to alter shared builtin functions process-wide, causing denial of service for the Node.js process.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• github.com/stalniy/casl
• github.com/stalniy/casl/blob/80f2380d03cfe9b162685d510ba8bc0ce83d0598/packages/casl-abi…
• github.com/stalniy/casl/commit/58242cb3c7911c8a89bacfb7d732701d81bc1324
• github.com/stalniy/casl/pull/1305
• www.vulncheck.com/advisories/casl-ability-6.7.5-before-7.0.2-prototype-pollution-via-ru…