Red Hat Enterprise Linux 7 update for libreoffice
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 7 |
| CVE-ID | CVE-2019-9848 CVE-2019-9849 CVE-2019-9850 CVE-2019-9851 CVE-2019-9852 CVE-2019-9853 CVE-2019-9854 |
| CWE-ID | CWE-94 CWE-264 CWE-20 CWE-22 CWE-284 |
| Exploitation vector | Network |
| Public exploit |
Vulnerability #1 is being exploited in the wild. Vulnerability #4 is being exploited in the wild. |
| Vulnerable software Subscribe |
libreoffice (Red Hat package) Operating systems & Components / Operating system package or component Red Hat Enterprise Linux for Power, little endian Operating systems & Components / Operating system Red Hat Enterprise Linux Desktop Operating systems & Components / Operating system Red Hat Enterprise Linux Workstation Operating systems & Components / Operating system Red Hat Enterprise Linux Server Operating systems & Components / Operating system |
| Vendor | Red Hat Inc. |
Security Bulletin
This security bulletin contains information about 7 vulnerabilities.
1) Code Injection
EUVDB-ID: #VU19223
Risk: High
CVSSv3.1: 8.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]
CVE-ID: CVE-2019-9848
CWE-ID:
CWE-94 - Improper Control of Generation of Code ('Code Injection')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation in LibreLogo component, bundled with LibreOffice application. A remote attacker can create a specially crafted document, trick the victim into opening it and execute arbitrary python code on the target system without displaying any warnings.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall updates from vendor's website.
libreoffice (Red Hat package): 5.3.6.1-19.el7 - 5.3.6.1-21.el7
Red Hat Enterprise Linux for Power, little endian: 7
Red Hat Enterprise Linux Desktop: 7
Red Hat Enterprise Linux Workstation: 7
Red Hat Enterprise Linux Server: 7
External linkshttp://access.redhat.com/errata/RHSA-2020:1151
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?
Yes. This vulnerability is being exploited in the wild.
2) Security restrictions bypass
EUVDB-ID: #VU19225
Risk: Low
CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-9849
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass certain security restrictions.
The vulnerability exists due to incorrect implementation of stealth mode feature, intended as an additional level of security that allows to retrieve online content into document from trusted resources only. A remote attacker can create a specially crafted document with bullet graphics, bypass the intended security restrictions and make the application retrieve data from arbitrary external sources.
Install updates from vendor's website.
libreoffice (Red Hat package): 5.3.6.1-19.el7 - 5.3.6.1-21.el7
Red Hat Enterprise Linux for Power, little endian: 7
Red Hat Enterprise Linux Desktop: 7
Red Hat Enterprise Linux Workstation: 7
Red Hat Enterprise Linux Server: 7
External linkshttp://access.redhat.com/errata/RHSA-2020:1151
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: #VU20956
Risk: High
CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-9850
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 patching of URL validation, as described in SB2019071703 #1. A remote attacker can bypass the protection that blocks calling LibreLogo from script event handlers and again trigger this calling.
MitigationInstall updates from vendor's website.
libreoffice (Red Hat package): 5.3.6.1-19.el7 - 5.3.6.1-21.el7
Red Hat Enterprise Linux for Power, little endian: 7
Red Hat Enterprise Linux Desktop: 7
Red Hat Enterprise Linux Workstation: 7
Red Hat Enterprise Linux Server: 7
External linkshttp://access.redhat.com/errata/RHSA-2020:1151
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) Input validation error
EUVDB-ID: #VU20860
Risk: High
CVSSv3.1: 8.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]
CVE-ID: CVE-2019-9851
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to execute arbitrary commands on the target system.
The vulnerability exists due to the affected software mishandles LibreLogo scripts. A remote attacker can persuade a user to open a specially crafted document and execute arbitrary commands on an affected system.
MitigationInstall updates from vendor's website.
libreoffice (Red Hat package): 5.3.6.1-19.el7 - 5.3.6.1-21.el7
Red Hat Enterprise Linux for Power, little endian: 7
Red Hat Enterprise Linux Desktop: 7
Red Hat Enterprise Linux Workstation: 7
Red Hat Enterprise Linux Server: 7
External linkshttp://access.redhat.com/errata/RHSA-2020:1151
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?
Yes. This vulnerability is being exploited in the wild.
5) Path traversal
EUVDB-ID: #VU20861
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-2019-9852
CWE-ID:
CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary commands on the target system.
The vulnerability exists due to insufficient URL encoding in script location checks. A remote attacker can by persuade a user to open a specially crafted document and execute preinstalled macros on the target system.
MitigationInstall updates from vendor's website.
libreoffice (Red Hat package): 5.3.6.1-19.el7 - 5.3.6.1-21.el7
Red Hat Enterprise Linux for Power, little endian: 7
Red Hat Enterprise Linux Desktop: 7
Red Hat Enterprise Linux Workstation: 7
Red Hat Enterprise Linux Server: 7
External linkshttp://access.redhat.com/errata/RHSA-2020:1151
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.
6) Input validation error
EUVDB-ID: #VU21398
Risk: High
CVSSv3.1: 7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-9853
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 when decoding URL in macro location. While documents were correctly detected as containing macros, and prompted the user to their existence within the documents, but macros within the document were subsequently not controlled by the security settings. A remote attacker can create a specially crafted document that once opened will execute arbitrary macro on the system with privileges of the current user.
Install updates from vendor's website.
libreoffice (Red Hat package): 5.3.6.1-19.el7 - 5.3.6.1-21.el7
Red Hat Enterprise Linux for Power, little endian: 7
Red Hat Enterprise Linux Desktop: 7
Red Hat Enterprise Linux Workstation: 7
Red Hat Enterprise Linux Server: 7
External linkshttp://access.redhat.com/errata/RHSA-2020:1151
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
7) Improper access control
EUVDB-ID: #VU20955
Risk: High
CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-9854
CWE-ID:
CWE-284 - Improper Access Control
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to unsafe URL assembly flaw in allowed script location check. A remote authenticated attacker can execute script in arbitrary locations on the filesystem by employing a URL encoding attack to defeat the path verification step.
Install updates from vendor's website.
libreoffice (Red Hat package): 5.3.6.1-19.el7 - 5.3.6.1-21.el7
Red Hat Enterprise Linux for Power, little endian: 7
Red Hat Enterprise Linux Desktop: 7
Red Hat Enterprise Linux Workstation: 7
Red Hat Enterprise Linux Server: 7
External linkshttp://access.redhat.com/errata/RHSA-2020:1151
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.
