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  1. Jira Data Center
  2. JRASERVER-70858

Stored XSS in Add Field module - CVE-2019-20900

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    • 8.02
    • Severity 3 - Minor
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      Atlassian Update – 01 February 2021

       
      Hi,

      We’ve analyzed this issue and released a fix for it in Jira 8.7 and later, including the Jira 8.13 LTS release. The risk of exploiting this vulnerability is low, as it can only be exploited by someone with admin credentials.

      We’re not planning to backport the fix to Jira 8.5 LTS, as it might break your current field descriptions that contain HTML, which we don’t want to do in a bugfix release. You can, however, implement the same fix manually by changing one of the Jira settings.

      To fix this manually,

      1. In Jira, go to Administration > General Configuration, and select Edit Settings.
      2. Set the Enable HTML in field descriptions and list values setting to OFF. After disabling this setting, you will also need to update the field descriptions that contain HTML, and remove the markup. This is the breaking behavior we’ve mentioned above.

      We also advise to upgrade to the latest Jira 8.13 LTS release.

       

      Thank you,

      Jira Server and Data Center Team

      Show
        Atlassian Update – 01 February 2021   Hi, We’ve analyzed this issue and released a fix for it in Jira 8.7 and later, including the Jira 8.13 LTS release. The risk of exploiting this vulnerability is low, as it can only be exploited by someone with admin credentials. We’re not planning to backport the fix to Jira 8.5 LTS, as it might break your current field descriptions that contain HTML, which we don’t want to do in a bugfix release. You can, however, implement the same fix manually by changing one of the Jira settings. To fix this manually, In Jira, go to Administration > General Configuration , and select Edit Settings . Set the Enable HTML in field descriptions and list values setting to OFF. After disabling this setting, you will also need to update the field descriptions that contain HTML, and remove the markup. This is the breaking behavior we’ve mentioned above. We also advise to upgrade to the latest Jira 8.13 LTS release.   Thank you, Jira Server and Data Center Team

      Affected versions of Atlassian Jira Server and Data Center allow remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability in the Add Field module.

      Affected versions:

      • version < 8.7.0

      Fixed versions:

      • 8.7.0

            [JRASERVER-70858] Stored XSS in Add Field module - CVE-2019-20900

            Filip Nowak added a comment -

            Hi,

            We’ve analyzed this issue and released a fix for it in Jira 8.7 and later, including the Jira 8.13 LTS release. The risk of exploiting this vulnerability is low, as it can only be exploited by someone with admin credentials.

            We’re not planning to backport the fix to Jira 8.5 LTS, as it might break your current field descriptions that contain HTML, which we don’t want to do in a bugfix release. You can, however, implement the same fix manually by changing one of the Jira settings.

            To fix this manually,

            1. In Jira, go to Administration > General Configuration, and select Edit Settings.
            2. Set the Enable HTML in field descriptions and list values setting to OFF. After disabling this setting, you will also need to update the field descriptions that contain HTML, and remove the markup. This is the breaking behavior we’ve mentioned above.

            We also advise to upgrade to the latest Jira 8.13 LTS release.

            Filip Nowak added a comment - Hi, We’ve analyzed this issue and released a fix for it in Jira 8.7 and later, including the Jira 8.13 LTS release. The risk of exploiting this vulnerability is low, as it can only be exploited by someone with admin credentials. We’re not planning to backport the fix to Jira 8.5 LTS, as it might break your current field descriptions that contain HTML, which we don’t want to do in a bugfix release. You can, however, implement the same fix manually by changing one of the Jira settings. To fix this manually, In Jira, go to Administration > General Configuration , and select Edit Settings . Set the Enable HTML in field descriptions and list values setting to OFF. After disabling this setting, you will also need to update the field descriptions that contain HTML, and remove the markup. This is the breaking behavior we’ve mentioned above. We also advise to upgrade to the latest Jira 8.13 LTS release.

            Aleksandar Josic added a comment - - edited

            Hallo Atlassian! When this issue would be fixed in ER 8.5 ???

            (Question placed on 2020-12-03)

            Aleksandar Josic added a comment - - edited Hallo Atlassian! When this issue would be fixed in ER 8.5 ??? (Question placed on 2020-12-03)

            Kimberly Deal added a comment -

            Yes, please update what the fix version for 8.5 will be.

            Kimberly Deal added a comment - Yes, please update what the fix version for 8.5 will be.

            SebastianB added a comment -

            When will 8.5.x be fixed?

             

            SebastianB added a comment - When will 8.5.x be fixed?  

            Security Metrics Bot added a comment -

            This is an independent assessment and you should evaluate its applicability to your own IT environment.
            CVSS v3 score: 4.8 => Medium severity

            Exploitability Metrics

            Attack Vector Network
            Attack Complexity Low
            Privileges Required High
            User Interaction Required

            Scope Metric

            Scope Changed

            Impact Metrics

            Confidentiality Low
            Integrity Low
            Availability None

            https://asecurityteam.bitbucket.io/cvss_v3/#CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

            Security Metrics Bot added a comment - This is an independent assessment and you should evaluate its applicability to your own IT environment. CVSS v3 score: 4.8 => Medium severity Exploitability Metrics Attack Vector Network Attack Complexity Low Privileges Required High User Interaction Required Scope Metric Scope Changed Impact Metrics Confidentiality Low Integrity Low Availability None https://asecurityteam.bitbucket.io/cvss_v3/#CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

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              security-metrics-bot Security Metrics Bot
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