CVE-2017-7782
First published: Tue Aug 08 2017(Updated: )
An error in the "WindowsDllDetourPatcher" where a RWX ("Read/Write/Execute") 4k block is allocated but never protected, violating DEP protections. Note: This attack only affects Windows operating systems. Other operating systems are not affected. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.
Credit: security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Thunderbird | <52.3 | 52.3 |
| Firefox | <55.0 | |
| Firefox ESR | <52.3.0 | |
| Thunderbird | <52.3.0 | |
| Microsoft Windows | ||
| Firefox | <55 | 55 |
| Firefox ESR | <52.3 | 52.3 |
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Reference Links
- https://bugzilla.mozilla.org/show_bug.cgi?id=1344034
- 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/100243
- http://www.securitytracker.com/id/1039124
- https://www.mozilla.org/security/advisories/mfsa2017-18/
- https://www.mozilla.org/security/advisories/mfsa2017-19/
- https://www.mozilla.org/security/advisories/mfsa2017-20/
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-2017-7782?
CVE-2017-7782 has been classified as a moderate severity vulnerability due to its potential to bypass Data Execution Prevention (DEP) protections.
How do I fix CVE-2017-7782?
To mitigate CVE-2017-7782, update Firefox and Thunderbird to versions 55 and 52.3 or later respectively.
Which software is affected by CVE-2017-7782?
CVE-2017-7782 affects Mozilla Firefox versions prior to 55, Mozilla Firefox ESR versions prior to 52.3, and Mozilla Thunderbird versions prior to 52.3.
Does CVE-2017-7782 affect operating systems other than Windows?
CVE-2017-7782 only affects Windows operating systems and does not impact other operating systems.
What type of allocation issue is described in CVE-2017-7782?
CVE-2017-7782 involves the allocation of a RWX 4k memory block that is not adequately protected, violating DEP security measures.
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