CVE-2017-7802: Use After Free
First published: Tue Aug 08 2017(Updated: )
A use-after-free vulnerability can occur when manipulating the DOM during the resize event of an image element. If these elements have been freed due to a lack of strong references, a potentially exploitable crash may occur when the freed elements are accessed.
Credit: security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/firefox | 118.0.2-1 | |
| debian/firefox-esr | 91.12.0esr-1~deb10u1 115.3.1esr-1~deb10u1 102.15.0esr-1~deb11u1 115.3.1esr-1~deb11u1 102.15.1esr-1~deb12u1 115.3.0esr-1~deb12u1 115.3.0esr-1 | |
| Thunderbird | <52.3 | 52.3 |
| Debian | =8.0 | |
| Debian | =9.0 | |
| Red Hat Enterprise Linux | =6.0 | |
| Red Hat Enterprise Linux | =7.0 | |
| Red Hat Enterprise Linux Desktop | =6.0 | |
| Red Hat Enterprise Linux Desktop | =7.0 | |
| Red Hat Enterprise Linux Server | =6.0 | |
| Red Hat Enterprise Linux Server | =7.0 | |
| Red Hat Enterprise Linux Server | =7.3 | |
| Red Hat Enterprise Linux Server | =7.4 | |
| Red Hat Enterprise Linux Server | =7.3 | |
| Red Hat Enterprise Linux Server | =7.4 | |
| Red Hat Enterprise Linux Server | =7.5 | |
| Red Hat Enterprise Linux Workstation | =6.0 | |
| Red Hat Enterprise Linux Workstation | =7.0 | |
| Firefox | <55.0 | |
| Firefox ESR | <52.3.0 | |
| Thunderbird | <52.3.0 | |
| Firefox | <55 | 55 |
| Firefox ESR | <52.3 | 52.3 |
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Reference Links
- https://bugzilla.mozilla.org/show_bug.cgi?id=1378147
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-20/
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-18/
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-19/
- http://www.securityfocus.com/bid/100202
- http://www.securitytracker.com/id/1039124
- https://access.redhat.com/errata/RHSA-2017:2456
- https://access.redhat.com/errata/RHSA-2017:2534
- https://security.gentoo.org/glsa/201803-14
- https://www.debian.org/security/2017/dsa-3928
- https://www.debian.org/security/2017/dsa-3968
- https://www.mozilla.org/security/advisories/mfsa2017-18/
- https://www.mozilla.org/security/advisories/mfsa2017-19/
- https://www.mozilla.org/security/advisories/mfsa2017-20/
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-19/#CVE-2017-7802
- https://bugzilla.redhat.com/show_bug.cgi?id=1479224
- https://security-tracker.debian.org/tracker/CVE-2017-7802
Peer vulnerabilities
(Found alongside the following vulnerabilities)
- CVE-2017-7800
- CVE-2017-7801
- CVE-2017-7809
- CVE-2017-7784
- CVE-2017-7802
- CVE-2017-7785
- CVE-2017-7786
- CVE-2017-7753
- CVE-2017-7787
- CVE-2017-7807
- CVE-2017-7792
- CVE-2017-7804
- CVE-2017-7791
- CVE-2017-7782
- CVE-2017-7803
- CVE-2017-7779
- CVE-2017-7798
- CVE-2017-7806
- CVE-2017-7808
- CVE-2017-7781
- CVE-2017-7794
- CVE-2017-7799
- CVE-2017-7783
- CVE-2017-7788
- CVE-2017-7789
- CVE-2017-7790
- CVE-2017-7796
- CVE-2017-7797
- CVE-2017-7780
Frequently Asked Questions
What is the severity of CVE-2017-7802?
CVE-2017-7802 has a medium severity rating due to the potential for a crash when accessing freed elements.
How do I fix CVE-2017-7802?
To fix CVE-2017-7802, you should update Firefox to version 118.0.2-1 or later, and for Firefox ESR, update to specific versions listed in the vulnerability details.
Which software is affected by CVE-2017-7802?
CVE-2017-7802 affects Firefox, Firefox ESR, and Thunderbird across several specific versions.
Can CVE-2017-7802 be exploited remotely?
Yes, CVE-2017-7802 could potentially be exploited remotely if an attacker can manipulate the DOM during the resize event.
Is CVE-2017-7802 specific to a certain operating system?
CVE-2017-7802 is not specific to any one operating system but affects software running on various versions of Debian and Red Hat Enterprise Linux.
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