CVE-2017-5440: Use After Free
First published: Wed Apr 19 2017(Updated: )
A use-after-free vulnerability during XSLT processing due to a failure to propagate error conditions during matching while evaluating context, leading to objects being used when they no longer exist. This results in a potentially exploitable crash.
Credit: security@mozilla.org security@mozilla.org security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Thunderbird | <52.1 | 52.1 |
| Firefox | <53 | 53 |
| Firefox ESR | <52.1 | 52.1 |
| Firefox ESR | <45.9 | 45.9 |
| Debian Linux | =8.0 | |
| 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 | <53.0 | |
| Firefox | =52.0 | |
| Firefox ESR | <45.9.0 | |
| Thunderbird | <52.1.0 | |
| Firefox ESR | =52.0 | |
| debian/firefox | 137.0.1-1 | |
| debian/firefox-esr | 115.14.0esr-1~deb11u1 128.9.0esr-1~deb11u1 128.8.0esr-1~deb12u1 128.9.0esr-1~deb12u1 128.9.0esr-2 |
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Reference Links
- https://bugzilla.mozilla.org/show_bug.cgi?id=1336832
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-13/
- https://www.mozilla.org/security/advisories/mfsa2017-10/
- https://www.mozilla.org/security/advisories/mfsa2017-11/
- https://www.mozilla.org/security/advisories/mfsa2017-12/
- https://www.mozilla.org/security/advisories/mfsa2017-13/
- https://www.debian.org/security/2017/dsa-3831
- https://access.redhat.com/errata/RHSA-2017:1104
- https://access.redhat.com/errata/RHSA-2017:1106
- https://access.redhat.com/errata/RHSA-2017:1201
- http://www.securityfocus.com/bid/97940
- http://www.securitytracker.com/id/1038320
- https://launchpad.net/bugs/cve/CVE-2017-5440
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-11/#CVE-2017-5440
- https://bugzilla.redhat.com/show_bug.cgi?id=1443322
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-12/
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-11/
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-13/#CVE-2017-5461
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-10/
- https://security-tracker.debian.org/tracker/CVE-2017-5440
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5440
- https://nvd.nist.gov/vuln/detail/CVE-2017-5440
- https://ubuntu.com/security/CVE-2017-5440
Parent vulnerabilities
(Appears in the following advisories)
Peer vulnerabilities
(Found alongside the following vulnerabilities)
- CVE-2017-5433
- CVE-2017-5435
- CVE-2017-5436
- CVE-2017-5461
- CVE-2017-5459
- CVE-2017-5466
- CVE-2017-5434
- CVE-2017-5432
- CVE-2017-5460
- CVE-2017-5438
- CVE-2017-5439
- CVE-2017-5440
- CVE-2017-5441
- CVE-2017-5442
- CVE-2017-5464
- CVE-2017-5443
- CVE-2017-5444
- CVE-2017-5446
- CVE-2017-5447
- CVE-2017-5465
- CVE-2016-10196
- CVE-2017-5454
- CVE-2017-5469
- CVE-2017-5445
- CVE-2017-5449
- CVE-2017-5451
- CVE-2017-5462
- CVE-2017-5467
- CVE-2017-5430
- CVE-2017-5429
- CVE-2017-5448
- CVE-2017-5455
- CVE-2017-5456
- CVE-2017-5450
- CVE-2017-5463
- CVE-2017-5452
- CVE-2017-5453
- CVE-2017-5458
- CVE-2017-5468
Frequently Asked Questions
What is the severity of CVE-2017-5440?
CVE-2017-5440 is classified as a medium severity vulnerability that can lead to potentially exploitable crashes.
How do I fix CVE-2017-5440?
To fix CVE-2017-5440, update your software to the latest versions including Firefox 53 or later, Firefox ESR 52.1 or later, or Thunderbird 52.1 or later.
Which software is affected by CVE-2017-5440?
CVE-2017-5440 affects Mozilla Firefox, Firefox ESR, and Thunderbird versions prior to their respective fixed releases.
What type of vulnerability is CVE-2017-5440?
CVE-2017-5440 is a use-after-free vulnerability that occurs during XSLT processing.
Can CVE-2017-5440 be exploited remotely?
Yes, CVE-2017-5440 could potentially be exploited remotely, as it allows unintended access to memory after it has been freed.
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