Cross-site scripting (XSS) vulnerability in the default exception handler in RESTEasy allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.04 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7630-1 advisory.

    It was discovered that RESTEasy made insufficient use of random values in asynchronous jobs. An attacker     could possibly use this issue to steal user data. This issue only affected Ubuntu 14.04 LTS.
    (CVE-2016-6345)

    It was discovered that RESTEasy enabled a vulnerable GZIP decompression module by default. An attacker     could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS.
    (CVE-2016-6346)

    It was discovered that RESTEasy improperly made use of unsanitized data while handling certain errors. An     attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue     only affected Ubuntu 14.04 LTS. (CVE-2016-6347)

    It was discovered that RESTEasy enabled a vulnerable JSON manipulation module by default. An attacker     could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only     affected Ubuntu 14.04 LTS. (CVE-2016-6348)

    It was discovered that RESTEasy enabled a vulnerable deserialization module by default. An attacker could     possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected     Ubuntu 14.04 LTS. (CVE-2016-7050)

    Nikos Papadopoulos discovered that RESTEasy improperly handled URL encoding when certain errors occur. An     attacker could possibly use this issue to modify the app's behavior for other users throughout the     network. This issue did not affect resteasy3.0 in Ubuntu 24.04 LTS, Ubuntu 24.10, and Ubuntu 25.04.
    (CVE-2020-10688)

    Mirko Selber discovered that RESTEasy improperly validated user input during HTTP response construction.
    An attacker could possibly use this issue to to cause a denial of service or execute arbitrary code. This     issue did not affect resteasy3.0 in Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, Ubuntu 24.10, and Ubuntu 25.04.
    (CVE-2020-1695)

    It was discovered that RESTEasy improperly handled receiving the WebApplicationException during a client     call. An attacker could possibly use this issue to obtain potentially sensitive server information.
    (CVE-2020-25633)

    It was discovered that RESTEasy improperly populated exception responses with endpoint class and method     names. An attacker could possibly use this issue to obtain potentially sensitive server information.
    (CVE-2021-20289)

    It was discovered that RESTEasy used improper permissions when creating temporary files. An attacker could     possibly use this issue to get access to sensitive data. (CVE-2023-0482)

    It was discovered that RESTEasy improperly handled certain HTTP requests containing ASCII control     characters. An attacker could possibly use this issue to cause a denial of service. (CVE-2024-9622)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Cross-site scripting (XSS) vulnerability in the default exception handler in RESTEasy allows remote     attackers to inject arbitrary web script or HTML via unspecified vectors. (CVE-2016-6347)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
242054	Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.04 : RESTEasy vulnerabilities (USN-7630-1)	Nessus	Ubuntu Local Security Checks	medium
219846	Linux Distros Unpatched Vulnerability : CVE-2016-6347	Nessus	Misc.	medium

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CVE-2016-6347

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