Atlassian Jira Server and Data Center Server-Side Template Injection
CVE-2019-11581 is a critical-severity improper neutralization of special elements in output used by a downstream component vulnerability in Jira Server and Data Center from Atlassian, with a CVSS 3.1 base score of 9.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists versions 7.6.14, 7.13.5, 8.0.3 as the first without the flaw, so updating Jira Server and Data Center to one of those releases or later removes the exposure. CISA added it to the Known Exploited Vulnerabilities catalogue on March 7, 2022, which means attacks have been observed in the wild.
Attackers are already exploiting this vulnerability, according to CISA.
What to do
- Update Jira Server and Data Center to 7.6.14 or 7.13.5 or 8.0.3 or 8.1.2, whichever matches your release line, or a later version.
- Update Jira Server to 7.6.14 or 7.13.5 or 8.0.3 or 8.1.2, whichever matches your release line, or a later version.
- CISA's required action: Apply updates per vendor instructions.
- Read the advisory on jira.atlassian.com for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Atlassian | Jira Server and Data Center | 4.4.0; before 7.6.14; 7.7.0; before 7.13.5; 8.0.0; before 8.0.3; 8.1.0; before 8.1.2; and 2 more ranges | 7.6.14, 7.13.5, 8.0.3, 8.1.2, 8.2.3 |
| Atlassian | Jira Server | 4.4 up to, but not including, 7.6.14; 7.7.0 up to, but not including, 7.13.5; 8.0.0 up to, but not including, 8.0.3; 8.1.0 up to, but not including, 8.1.2; 8.2.0 up to, but not including, 8.2.3 | 7.6.14, 7.13.5, 8.0.3, 8.1.2, 8.2.3 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 9.8 | Critical | NVD |
| CVSS 3.1 | 9.8 | Critical | CISA (ADP) |
| CVSS 2.0 | 9.3 | High | NVD |
Official description
There was a server-side template injection vulnerability in Jira Server and Data Center, in the ContactAdministrators and the SendBulkMail actions. An attacker is able to remotely execute code on systems that run a vulnerable version of Jira Server or Data Center. All versions of Jira Server and Data Center from 4.4.0 before 7.6.14, from 7.7.0 before 7.13.5, from 8.0.0 before 8.0.3, from 8.1.0 before 8.1.2, and from 8.2.0 before 8.2.3 are affected by this vulnerability.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Neutralization of Special Elements in Output Used by a Downstream Component
The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
How developers prevent this class of flaw
- Programming languages and supporting technologies might be chosen which are not subject to these issues.
- Utilize an appropriate mix of allowlist and denylist parsing to filter control-plane syntax from all input.
Timeline
- CVE record published.
- Added to CISA's Known Exploited Vulnerabilities catalogue.
- Deadline for US federal agencies to remediate, set by CISA.
- CISA published its SSVC assessment (exploitation: active, automatable: yes, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Advisories
- jira.atlassian.com/browse/JRASERVER-69532Issue Tracking
Third-party and government advisories
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-11581US Government Resource
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