OpenSUSE Linux update for nextcloud



Published: 2020-05-18
Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE ID CVE-2020-8154
CVE-2020-8155
CWE ID CWE-79
Exploitation vector Network
Public exploit N/A
Vulnerable software
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SUSE Package Hub for SUSE Linux Enterprise
Universal components / Libraries / Libraries used by multiple products

Vendor SuSE

Security Advisory

1) Authorization bypass through user-controlled key

Risk: Medium

CVSSv3: 4.6 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-8154

CWE-ID: -

Exploit availability: No

Description

The vulnerability allows a remote attacker to wipe devices of other users.

The vulnerability exists due to insecure direct object reference in Nextcloud Server. A remote attacker can send specially crafted request directory to the affected endpoint and remotely wipe devices of other users.

Mitigation

Update the affected packages.

Vulnerable software versions

SUSE Package Hub for SUSE Linux Enterprise: 12

CPE External links

https://lists.opensuse.org/opensuse-security-announce/2020-05/msg00037.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.

2) Cross-site scripting

Risk: Low

CVSSv3: 5.3 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-8155

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data within a third-party library in Files PDF viewer for Nextcloud Server. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Update the affected packages.

Vulnerable software versions

SUSE Package Hub for SUSE Linux Enterprise: 12

CPE External links

https://lists.opensuse.org/opensuse-security-announce/2020-05/msg00037.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.