CVE-2019-9813
23Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendepss 6.3%
from disclosure to weapon0 days
Published on NVDApr 26
1st PoCApr 3
exploitation probability
6.3%top 7% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
Incorrect handling of __proto__ mutations may lead to type confusion in IonMonkey JIT code and can be leveraged for arbitrary memory read and write. This vulnerability affects Firefox < 66.0.1, Firefox ESR < 60.6.1, and Thunderbird < 60.6.1.
public PoCs found — 1✓ VexDay Proof
exploitdb✓ VexDay Proofwww.exploit-db.com/exploits/46646⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
https://access.redhat.com/errata/RHSA-2019:0966https://access.redhat.com/errata/RHSA-2019:1144https://bugzilla.mozilla.org/show_bug.cgi?id=1538006https://www.mozilla.org/security/advisories/mfsa2019-09/https://www.mozilla.org/security/advisories/mfsa2019-10/https://www.mozilla.org/security/advisories/mfsa2019-12/