openSUSE Security Update: Security update for libgit2
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Announcement ID: openSUSE-SU-2018:3519-1
Rating: moderate
References: #1085256 #1095219 #1100612 #1100613 #1104641

Cross-References: CVE-2018-10887 CVE-2018-10888 CVE-2018-11235
CVE-2018-15501 CVE-2018-8099
Affected Products:
openSUSE Leap 42.3
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An update that fixes 5 vulnerabilities is now available.

Description:

This update for libgit2 fixes the following issues:

– CVE-2018-8099: Fixed possible denial of service attack via different
vectors by not being able to differentiate between these status codes
(bsc#1085256).
– CVE-2018-11235: With a crafted .gitmodules file, a malicious project can
execute an arbitrary script on a machine that runs “git clone
–recurse-submodules” because submodule “names” are obtained from this
file, and then appended to $GIT_DIR/modules, leading to directory
traversal with “../” in a name. Finally, post-checkout hooks from a
submodule are executed, bypassing the intended design in which hooks are
not obtained from a remote server. (bsc#1095219)
– CVE-2018-10887: It has been discovered that an unexpected sign extension
in git_delta_apply function in delta.c file may have lead to an integer
overflow which in turn leads to an out of bound read, allowing to read
before the base object. An attacker could have used this flaw to leak
memory addresses or cause a Denial of Service. (bsc#1100613)
– CVE-2018-10888: A missing check in git_delta_apply function in delta.c
file, may lead to an out-of-bound read while reading a binary delta
file. An attacker may use this flaw to cause a Denial of Service.
(bsc#1100612)
– CVE-2018-15501: A remote attacker can send a crafted smart-protocol “ng”
packet that lacks a ‘\0’ byte to trigger an out-of-bounds read that
leads to DoS. (bsc#1104641)

This update was imported from the SUSE:SLE-12-SP2:Update update project.

Patch Instructions:

To install this openSUSE Security Update use the SUSE recommended installation methods
like YaST online_update or “zypper patch”.

Alternatively you can run the command listed for your product:

– openSUSE Leap 42.3:

zypper in -t patch openSUSE-2018-1314=1

Package List:

– openSUSE Leap 42.3 (i586 x86_64):

libgit2-24-0.24.1-10.3.1
libgit2-24-debuginfo-0.24.1-10.3.1
libgit2-debugsource-0.24.1-10.3.1
libgit2-devel-0.24.1-10.3.1

– openSUSE Leap 42.3 (x86_64):

libgit2-24-32bit-0.24.1-10.3.1
libgit2-24-debuginfo-32bit-0.24.1-10.3.1

References:

https://www.suse.com/security/cve/CVE-2018-10887.html
https://www.suse.com/security/cve/CVE-2018-10888.html
https://www.suse.com/security/cve/CVE-2018-11235.html
https://www.suse.com/security/cve/CVE-2018-15501.html
https://www.suse.com/security/cve/CVE-2018-8099.html
https://bugzilla.suse.com/1085256
https://bugzilla.suse.com/1095219
https://bugzilla.suse.com/1100612
https://bugzilla.suse.com/1100613
https://bugzilla.suse.com/1104641

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