SB2019011811 - XXE-attack in Atlassian Universal Plugin Manager
Published: January 18, 2019 Updated: January 22, 2019
Security Bulletin ID
SB2019011811
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) XML External Entity injection (CVE-ID: CVE-2018-20233)
CWE-ID: CWE-611 - Improper Restriction of XML External Entity Reference ('XXE')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:L/SC:L/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker with system administrator privileges to conduct XXE-attack.
The vulnerability exists due to improper handling of XML External Entities (XXEs) when parsing of atlassian plugin xml files in an uploaded JAR. A remote attacker can submit a specially crafted input to read files, make network requests and perform a denial of service attack.
Remediation
Install update from vendor's website.