OpenSUSE Linux update for libgit2



Risk Low
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2018-10887
CVE-2018-10888
CVE-2018-11235
CVE-2018-15501
CWE-ID CWE-125
CWE-190
CWE-20
Exploitation vector Network
Public exploit Public exploit code for vulnerability #3 is available.
Vulnerable software
 Opensuse
Operating systems & Components / Operating system

Vendor SUSE

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Integer overflow

EUVDB-ID: #VU13842

Risk: Low

CVSSv3.1: 3.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-10887

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a local attacker to obtain potentially sensitive information or cause DoS condition on the target system.

The vulnerability exists due to integer overflow when unexpected sign extension in the git_delta_apply function of the delta.c file. A remote unauthenticated attacker can trigger an out-of-bounds read condition, bypass bounds check and read sensitive memory information or cause the service to crash.

Mitigation

Update the affected packages.

Vulnerable software versions

Opensuse: 15.0

CPE2.3 External links

http://lists.opensuse.org/opensuse-security-announce/2018-08/msg00074.html


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Out-of-bounds read

EUVDB-ID: #VU13843

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-10888

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The vulnerability exists due to a missing check in the git_delta_apply function, as defined in the delta.c file. A remote unauthenticated attacker can trick the victim into opening a specially crafted binary delta file, trigger an out-of-bounds read condition and cause the service to crash.

Mitigation

Update the affected packages.

Vulnerable software versions

Opensuse: 15.0

CPE2.3 External links

http://lists.opensuse.org/opensuse-security-announce/2018-08/msg00074.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Improper input validation

EUVDB-ID: #VU13047

Risk: High

CVSSv3.1: 9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2018-11235

CWE-ID: CWE-20 - Improper input validation

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to improper validation of submodule "names" supplied via the untrusted .gitmodules file when appending them to the '$GIT_DIR/modules' directory. A remote attacker can return specially crafted data to create or overwrite files on the target user's system when the repository is cloned and execute arbitrary code with elevated privileges.

Mitigation

Update the affected packages.

Vulnerable software versions

Opensuse: 15.0

CPE2.3 External links

http://lists.opensuse.org/opensuse-security-announce/2018-08/msg00074.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.

4) Out-of-bounds read

EUVDB-ID: #VU14546

Risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-15501

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The vulnerability exists due to out-of-bounds read in ng_pkt in transports/smart_pkt.c in libgit2. A remote attacker can send a specially crafted smart-protocol "ng" packet that lacks a '' byte and cause the service to crash.

Mitigation

Update the affected packages.

Vulnerable software versions

Opensuse: 15.0

CPE2.3 External links

http://lists.opensuse.org/opensuse-security-announce/2018-08/msg00074.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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