CVE-2017-5375
JIT code allocation can allow for a bypass of ASLR and DEP protections leading to potential memory corruption attacks.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 34.1%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
JIT code allocation can allow for a bypass of ASLR and DEP protections leading to potential memory corruption attacks. This vulnerability affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 34.07% probability · 98th percentile
- Public exploits
- 3 in Exploit-DB · verified · first 14 July 2017
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- redhat/enterprise linux desktop · redhat/enterprise linux server · redhat/enterprise linux workstation · mozilla/firefox · mozilla/thunderbird · debian/debian linux
- Source
- security@mozilla.org
EPSS moved from 19.8% on 21 September 2026 to 34.1% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
Public exploits (3)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
| EDB-ID | Title | Type | Published | Verified |
|---|---|---|---|---|
| EDB-44294source ↗ | Firefox 44.0.2 - ASM.JS JIT-Spray Remote Code Executionwindows · Rh0 | remote | 16 March 2018 | yes |
| EDB-44293source ↗ | Firefox 46.0.1 - ASM.JS JIT-Spray Remote Code Executionwindows · Rh0 | remote | 16 March 2018 | yes |
| EDB-42327source ↗ | Firefox 50.0.1 - ASM.JS JIT-Spray Remote Code Executionwindows · Rh0 | remote | 14 July 2017 | no |
References
- http://rhn.redhat.com/errata/RHSA-2017-0190.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0238.htmlThird Party Advisory
- http://www.securityfocus.com/bid/95757Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037693Third Party Advisory, VDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1325200Issue Tracking, Permissions Required
- https://security.gentoo.org/glsa/201702-13Third Party Advisory
- https://security.gentoo.org/glsa/201702-22Third Party Advisory
- https://www.debian.org/security/2017/dsa-3771Third Party Advisory
- https://www.debian.org/security/2017/dsa-3832Third Party Advisory
- https://www.exploit-db.com/exploits/42327/Exploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/44293/Exploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/44294/Exploit, Third Party Advisory, VDB Entry
- https://www.mozilla.org/security/advisories/mfsa2017-01/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-02/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-03/Vendor Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0190.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0238.htmlThird Party Advisory
- http://www.securityfocus.com/bid/95757Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037693Third Party Advisory, VDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1325200Issue Tracking, Permissions Required
- https://security.gentoo.org/glsa/201702-13Third Party Advisory
- https://security.gentoo.org/glsa/201702-22Third Party Advisory
- https://www.debian.org/security/2017/dsa-3771Third Party Advisory
- https://www.debian.org/security/2017/dsa-3832Third Party Advisory
- https://www.exploit-db.com/exploits/42327/Exploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/44293/Exploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/44294/Exploit, Third Party Advisory, VDB Entry
- https://www.mozilla.org/security/advisories/mfsa2017-01/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-02/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-03/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.