CVE-2016-8569: Null Pointer Dereference
First published: Fri Feb 03 2017(Updated: )
The git_oid_nfmt function in commit.c in libgit2 before 0.24.3 allows remote attackers to cause a denial of service (NULL pointer dereference) via a cat-file command with a crafted object file.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| libgit2 | <=0.24.2 | |
| Fedora | =23 | |
| Fedora | =24 | |
| Fedora | =25 | |
| SUSE Linux | =42.1 | |
| SUSE Linux | =42.2 | |
| SUSE Linux | =13.2 | |
| SUSE Linux Enterprise Server | =12.0 |
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Reference Links
- http://lists.opensuse.org/opensuse-updates/2016-12/msg00075.html
- http://lists.opensuse.org/opensuse-updates/2017-01/msg00103.html
- http://lists.opensuse.org/opensuse-updates/2017-01/msg00110.html
- http://lists.opensuse.org/opensuse-updates/2017-01/msg00114.html
- http://www.openwall.com/lists/oss-security/2016/10/08/7
- http://www.securityfocus.com/bid/93465
- https://bugzilla.redhat.com/show_bug.cgi?id=1383211
- https://github.com/libgit2/libgit2/issues/3937
- https://github.com/libgit2/libgit2/releases/tag/v0.24.3
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4E77DG5KGQ7L34U75QY7O6NIPKZNQHQJ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X3JBSNJAXP7JA3TGE2NPNRTD77JXFG4E/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XVUEIG6EESZB6BRU2IE3F5NRUEHMAEKC/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X3JBSNJAXP7JA3TGE2NPNRTD77JXFG4E/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XVUEIG6EESZB6BRU2IE3F5NRUEHMAEKC/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4E77DG5KGQ7L34U75QY7O6NIPKZNQHQJ/
Frequently Asked Questions
What is the severity of CVE-2016-8569?
CVE-2016-8569 has a severity rating that can lead to a denial of service due to a NULL pointer dereference.
How do I fix CVE-2016-8569?
To fix CVE-2016-8569, upgrade libgit2 to version 0.24.3 or later.
Which software versions are affected by CVE-2016-8569?
CVE-2016-8569 affects libgit2 versions before 0.24.3 and specific Fedora and openSUSE releases.
What type of vulnerability is CVE-2016-8569?
CVE-2016-8569 is classified as a denial of service vulnerability.
Can CVE-2016-8569 be exploited remotely?
Yes, CVE-2016-8569 can be exploited by remote attackers using a crafted object file with the cat-file command.
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