CVE-2015-1607: Input Validation
First published: Wed Nov 20 2019(Updated: )
kbx/keybox-search.c in GnuPG before 1.4.19, 2.0.x before 2.0.27, and 2.1.x before 2.1.2 does not properly handle bitwise left-shifts, which allows remote attackers to cause a denial of service (invalid read operation) via a crafted keyring file, related to sign extensions and "memcpy with overlapping ranges."
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Gnupg Gnupg | <1.4.19 | |
| Gnupg Gnupg | >=2.0<2.0.27 | |
| Gnupg Gnupg | >=2.1.0<2.1.2 | |
| Canonical Ubuntu Linux | =10.04 | |
| Canonical Ubuntu Linux | =12.04 | |
| Canonical Ubuntu Linux | =14.04 | |
| Canonical Ubuntu Linux | =14.10 |
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Reference Links
- http://git.gnupg.org/cgi-bin/gitweb.cgi?p=gnupg.git;a=commit;h=2183683bd633818dd031b090b5530951de76f392
- http://www.openwall.com/lists/oss-security/2015/02/13/14
- http://www.openwall.com/lists/oss-security/2015/02/14/6
- http://www.securityfocus.com/bid/72610
- http://www.ubuntu.com/usn/usn-2554-1/
- https://blog.fuzzing-project.org/5-Multiple-issues-in-GnuPG-found-through-keyring-fuzzing-TFPA-0012015.html
- https://lists.gnupg.org/pipermail/gnupg-announce/2015q1/000361.html
- https://lists.gnupg.org/pipermail/gnupg-announce/2015q1/000362.html
- https://lists.gnupg.org/pipermail/gnupg-announce/2015q1/000363.html
- http://git.gnupg.org/cgi-bin/gitweb.cgi?p=gnupg.git%3Ba=commit%3Bh=2183683bd633818dd031b090b5530951de76f392
Frequently Asked Questions
What is the severity of CVE-2015-1607?
The severity of CVE-2015-1607 is medium with a severity value of 5.5.
What software is affected by CVE-2015-1607?
GnuPG versions before 1.4.19, 2.0.x before 2.0.27, and 2.1.x before 2.1.2 are affected. Additionally, Ubuntu Linux versions 10.04, 12.04, 14.04, and 14.10 are also affected.
How does CVE-2015-1607 impact GnuPG?
CVE-2015-1607 allows remote attackers to cause a denial of service (invalid read operation) through a crafted keyring file, due to improper handling of bitwise left-shifts.
Is there a fix available for CVE-2015-1607?
Yes, updating to GnuPG 1.4.19, 2.0.27, or 2.1.2 will fix the vulnerability.
Where can I find more information about CVE-2015-1607?
More information about CVE-2015-1607 can be found on the following references: [Link 1](http://git.gnupg.org/cgi-bin/gitweb.cgi?p=gnupg.git;a=commit;h=2183683bd633818dd031b090b5530951de76f392), [Link 2](http://www.openwall.com/lists/oss-security/2015/02/13/14), [Link 3](http://www.openwall.com/lists/oss-security/2015/02/14/6).
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