The stringprep_utf8_to_ucs4 function in libin before 1.31, as used in jabberd2, allows context-dependent attackers to read system memory and possibly have other unspecified impact via invalid UTF-8 characters in a string, which triggers an out-of-bounds read.

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

  - The stringprep_utf8_to_ucs4 function in libin before 1.31, as used in jabberd2, allows context-dependent     attackers to read system memory and possibly have other unspecified impact via invalid UTF-8 characters in     a string, which triggers an out-of-bounds read. (CVE-2015-2059)

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

Plugin has been deprecated due to a change in logic. Coverage will be provided in a new plugin.

According to the version of the libidn package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerability :

  - The stringprep_utf8_to_ucs4 function in libin before     1.31, as used in jabberd2, allows context-dependent     attackers to read system memory and possibly have other     unspecified impact via invalid UTF-8 characters in a     string, which triggers an out-of-bounds     read.(CVE-2015-2059)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for libidn fixes the following issues :

  - CVE-2016-6262 and CVE-2015-8948: Out-of-bounds-read when     reading one zero byte as input (bsc#990189)

  - CVE-2016-6261: Out-of-bounds stack read in     idna_to_ascii_4i (bsc#990190)

  - CVE-2016-6263: stringprep_utf8_nfkc_normalize reject     invalid UTF-8 (bsc#990191)

  - CVE-2015-2059: out-of-bounds read with stringprep on     invalid UTF-8 (bsc#923241)

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for wget fixes the following issues :

  - Fix for HTTP to a FTP redirection file name confusion     vulnerability (bsc#984060, CVE-2016-4971).

  - Work around a libidn vulnerability (bsc#937096,     CVE-2015-2059).

  - Fix for wget fails with basicauth: Failed writing HTTP     request: Bad file descriptor (bsc#958342)

This update was imported from the SUSE:SLE-12:Update update project.

This update for wget fixes the following issues :

  - Fix for HTTP to a FTP redirection file name confusion     vulnerability (bsc#984060, CVE-2016-4971).

  - Work around a libidn vulnerability (bsc#937096,     CVE-2015-2059).

  - Fix for wget fails with basicauth: Failed writing HTTP     request: Bad file descriptor (bsc#958342)

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Ubuntu 14.04 LTS / 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3068-1 advisory.

    Thijs Alkemade, Gustavo Grieco, Daniel Stenberg, and Nikos Mavrogiannopoulos discovered that Libidn     incorrectly handled invalid UTF-8 characters. A remote attacker could use this issue to cause Libidn to     crash, resulting in a denial of service, or possibly disclose sensitive memory. This issue only applied to     Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2015-2059)

    Hanno Bck discovered that Libidn incorrectly handled certain input. A remote attacker could possibly use     this issue to cause Libidn to crash, resulting in a denial of service. (CVE-2015-8948, CVE-2016-6262,     CVE-2016-6261, CVE-2016-6263)

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.

This update for libidn fixes the following issues :

  - CVE-2016-6262 and CVE-2015-8948: Out-of-bounds-read when     reading one zero byte as input (bsc#990189)

  - CVE-2016-6261: Out-of-bounds stack read in     idna_to_ascii_4i (bsc#990190) 

  - CVE-2016-6263: stringprep_utf8_nfkc_normalize reject     invalid UTF-8 (bsc#990191)

  - CVE-2015-2059: out-of-bounds read with stringprep on     invalid UTF-8 (bsc#923241) 

This update was imported from the SUSE:SLE-12:Update update project.

It was discovered that libidn, the GNU library for Internationalized Domain Names (IDNs), did not correctly handle invalid UTF-8 input, causing an out-of-bounds read. This could allow attackers to disclose sensitive information from an application using the libidn library.

For Debian 7 'Wheezy', these problems have been fixed in version 1.25-2+deb7u1.

We recommend that you upgrade your libidn packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

It was discovered that libidn, the GNU library for Internationalized Domain Names (IDNs), did not correctly handle invalid UTF-8 input, causing an out-of-bounds read. This could allow attackers to disclose sensitive information from an application using the libidn library.

Security fix for CVE-2015-2059

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Simon Josefsson reports :

stringprep_utf8_to_ucs4 now rejects invalid UTF-8. This function has always been documented to not validate that the input UTF-8 string is actually valid UTF-8...

libidn was updated to version 1.31 to fix one security issue.

This security issue was fixed :

  - CVE-2015-2059: Out-of-bounds read with stringprep on     invalid UTF-8 (bsc#923241).

Thijs Alkemade discovered that the Jabber server may pass an invalid UTF-8 string to libidn, the GNU library for Internationalized Domain Names (IDNs). In the case of the Jabber server, this results in information disclosure, and it is likely that some other applications using libidn have similar vulnerabilities. This update changes libidn to check for invalid strings rather than assuming that the application has done so.

For the oldoldstable distribution (squeeze), this problem has been fixed in version 1.15-2+deb6u1.

For the oldstable distribution (wheezy) and stable distribution (jessie), this problem will be fixed soon.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
218980	Linux Distros Unpatched Vulnerability : CVE-2015-2059	Nessus	Misc.	critical
198578	RHEL 6 : libidn (Unpatched Vulnerability) (deprecated)	Nessus	Red Hat Local Security Checks	critical
124957	EulerOS Virtualization 3.0.1.0 : libidn (EulerOS-SA-2019-1454)	Nessus	Huawei Local Security Checks	high
93459	SUSE SLES11 Security Update : libidn (SUSE-SU-2016:2291-1)	Nessus	SuSE Local Security Checks	high
93430	openSUSE Security Update : wget (openSUSE-2016-1067)	Nessus	SuSE Local Security Checks	high
93369	SUSE SLED12 / SLES12 Security Update : wget (SUSE-SU-2016:2226-1)	Nessus	SuSE Local Security Checks	high
93292	SUSE SLED12 / SLES12 Security Update : libidn (SUSE-SU-2016:2079-1)	Nessus	SuSE Local Security Checks	high
93107	Ubuntu 14.04 LTS / 16.04 LTS : Libidn vulnerabilities (USN-3068-1)	Nessus	Ubuntu Local Security Checks	high
93092	openSUSE Security Update : libidn (openSUSE-2016-1014)	Nessus	SuSE Local Security Checks	high
91196	Debian DLA-476-1 : libidn security update	Nessus	Debian Local Security Checks	high
91140	Debian DSA-3578-1 : libidn - security update	Nessus	Debian Local Security Checks	high
85062	Fedora 21 : libidn-1.31-1.fc21 (2015-11621)	Nessus	Fedora Local Security Checks	high
85060	Fedora 22 : libidn-1.31-1.fc22 (2015-11562)	Nessus	Fedora Local Security Checks	high
84970	FreeBSD : libidn -- out-of-bounds read issue with invalid UTF-8 input (4caf01e2-30e6-11e5-a4a5-002590263bf5)	Nessus	FreeBSD Local Security Checks	high
84866	openSUSE Security Update : libidn (openSUSE-2015-497)	Nessus	SuSE Local Security Checks	high
84835	Debian DLA-277-1 : libidn security update	Nessus	Debian Local Security Checks	high

Detections

Analytics

CVE-2015-2059

critical

Tenable Plugins

critical

critical

high

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