CVE-2017-5378
This allows for pointer leaks because an object's address can be discovered through hash codes, and also allows for data leakage of an object's content using these hash codes.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.36%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Hashed codes of JavaScript objects are shared between pages. This allows for pointer leaks because an object's address can be discovered through hash codes, and also allows for data leakage of an object's content using these hash codes. This vulnerability affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 3.36% probability · 88th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-200
- Affected
- debian/debian linux · redhat/enterprise linux · redhat/enterprise linux desktop · redhat/enterprise linux server · redhat/enterprise linux server aus · redhat/enterprise linux server eus · redhat/enterprise linux workstation · mozilla/thunderbird · mozilla/firefox
- Source
- security@mozilla.org
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/95769Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037693Third Party Advisory, VDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1312001Exploit, Issue Tracking, Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1330769Issue Tracking, Patch, Vendor Advisory
- 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.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/95769Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037693Third Party Advisory, VDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1312001Exploit, Issue Tracking, Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1330769Issue Tracking, Patch, Vendor Advisory
- 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.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. Refreshed daily.