openEuler update for libgit2
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2020-12278 CVE-2020-12279 CVE-2019-1352 CVE-2019-1353 |
| CWE-ID | CWE-706 CWE-20 CWE-276 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
openEuler Operating systems & Components / Operating system libgit2-devel Operating systems & Components / Operating system package or component libgit2-debugsource Operating systems & Components / Operating system package or component libgit2-debuginfo Operating systems & Components / Operating system package or component libgit2 Operating systems & Components / Operating system package or component |
| Vendor | openEuler |
Security Bulletin
This security bulletin contains information about 4 vulnerabilities.
1) Use of Incorrectly-Resolved Name or Reference
EUVDB-ID: #VU86203
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-12278
CWE-ID:
CWE-706 - Use of Incorrectly-Resolved Name or Reference
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to improper handling of equivalent filenames that exist because of NTFS Alternate Data Streams in path.c. A remote attacker can trick the victim into cloning a specially crafted repository and execute arbitrary code on the system.
Install updates from vendor's repository.
Vulnerable software versionsopenEuler: 20.03 LTS SP1 - 20.03 LTS SP2
libgit2-devel: before 0.27.8-5
libgit2-debugsource: before 0.27.8-5
libgit2-debuginfo: before 0.27.8-5
libgit2: before 0.27.8-5
External linkshttp://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1282
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.
2) Use of Incorrectly-Resolved Name or Reference
EUVDB-ID: #VU86204
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-12279
CWE-ID:
CWE-706 - Use of Incorrectly-Resolved Name or Reference
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to improper handling of equivalent filenames that exist because of NTFS short names in checkout.c. A remote attacker can trick the victim into cloning a specially crafted repository and execute arbitrary code on the system. MitigationInstall updates from vendor's repository.
Vulnerable software versionsopenEuler: 20.03 LTS SP1 - 20.03 LTS SP2
libgit2-devel: before 0.27.8-5
libgit2-debugsource: before 0.27.8-5
libgit2-debuginfo: before 0.27.8-5
libgit2: before 0.27.8-5
External linkshttp://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1282
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) Input validation error
EUVDB-ID: #VU23492
Risk: High
CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-1352
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insufficient validation of user-supplied input within the Git for Visual Studio. A remote attacker can convince the user to clone a malicious repo and execute arbitrary code on the target system.
MitigationInstall updates from vendor's repository.
Vulnerable software versionsopenEuler: 20.03 LTS SP1 - 20.03 LTS SP2
libgit2-devel: before 0.27.8-5
libgit2-debugsource: before 0.27.8-5
libgit2-debuginfo: before 0.27.8-5
libgit2: before 0.27.8-5
External linkshttp://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1282
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.
4) Incorrect default permissions
EUVDB-ID: #VU23555
Risk: Low
CVSSv3.1: 3.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-1353
CWE-ID:
CWE-276 - Incorrect Default Permissions
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists to due none of the NTFS protections are active when accessing a working directory on a regular Windows drive. A local user with access to the system can view contents of files and directories or modify them.
Note: This vulnerability occurs when running Git in the Windows Subsystem for Linux (also known as "WSL").
MitigationInstall updates from vendor's repository.
Vulnerable software versionsopenEuler: 20.03 LTS SP1 - 20.03 LTS SP2
libgit2-devel: before 0.27.8-5
libgit2-debugsource: before 0.27.8-5
libgit2-debuginfo: before 0.27.8-5
libgit2: before 0.27.8-5
External linkshttp://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1282
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.
