An issue was discovered in the _asn1_decode_simple_ber function in decoding.c in GNU Libtasn1 before 4.13. Unlimited recursion in the BER decoder leads to stack exhaustion and DoS.

The remote Redhat Enterprise Linux 7 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - libtasn1: Stack-based buffer overflow in asn1_find_node() (CVE-2017-6891)

  - libtasn1: Infinite loop in _asn1_expand_object_id(ptree) leads to memory exhaustion (CVE-2018-1000654)

  - The _asn1_check_identifier function in GNU Libtasn1 through 4.12 causes a NULL pointer dereference and     crash when reading crafted input that triggers assignment of a NULL value within an asn1_node structure.
    It may lead to a remote denial of service attack. (CVE-2017-10790)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

According to the version of the libtasn1 packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerability :

  - An issue was discovered in the _asn1_decode_simple_ber     function in decoding.c in GNU Libtasn1 before 4.13.
    Unlimited recursion in the BER decoder leads to stack     exhaustion and DoS.i1/4^CVE-2018-6003i1/4%0

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.

According to the version of the libtasn1 packages installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  - An issue was discovered in the _asn1_decode_simple_ber     function in decoding.c in GNU Libtasn1 before 4.13.
    Unlimited recursion in the BER decoder leads to stack     exhaustion and DoS.(CVE-2018-6003)

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.

An update of the libtasn1 package has been released.

According to the version of the libtasn1 packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerability :

  - An issue was discovered in the _asn1_decode_simple_ber     function in decoding.c in GNU Libtasn1 before 4.13.
    Unlimited recursion in the BER decoder leads to stack     exhaustion and DoS.(CVE-2018-6003)

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.

Two vulnerabilities were discovered in Libtasn1, a library to manage ASN.1 structures, allowing a remote attacker to cause a denial of service against an application using the Libtasn1 library.

Update to 4.13 (#1535261)

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

This update for libtasn1 fixes one issue.

This security issue was fixed :

  - CVE-2018-6003: Prevent a stack exhaustion in
    _asn1_decode_simple_ber (lib/decoding.c) when decoding     BER encoded structure allowed for DoS (bsc#1076832).

This update was imported from the SUSE:SLE-12-SP3:Update update project.

This update for libtasn1 fixes one issue. This security issue was fixed :

  - CVE-2018-6003: Prevent a stack exhaustion in
    _asn1_decode_simple_ber (lib/decoding.c) when decoding     BER encoded structure allowed for DoS (bsc#1076832).

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.

Fixes security issue.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
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-3547-1 advisory.

    It was discovered that Libtasn1 incorrectly handled certain files. If a user were tricked into opening a     crafted file, an attacker could possibly use this to cause a denial of service. This issue only affected     Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-10790)

    It was discovered that Libtasn1 incorrectly handled certain inputs. An attacker could possibly use this to     cause Libtasn1 to hang, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS and     Ubuntu 17.10. (CVE-2018-6003)

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.

ID	Name	Product	Family	Severity
198787	RHEL 7 : libtasn1 (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	high
123898	EulerOS Virtualization 2.5.4 : libtasn1 (EulerOS-SA-2019-1212)	Nessus	Huawei Local Security Checks	high
123894	EulerOS Virtualization 2.5.3 : libtasn1 (EulerOS-SA-2019-1208)	Nessus	Huawei Local Security Checks	high
122204	EulerOS 2.0 SP3 : libtasn1 (EulerOS-SA-2019-1031)	Nessus	Huawei Local Security Checks	high
121921	Photon OS 2.0: Libtasn1 PHSA-2018-2.0-0017	Nessus	PhotonOS Local Security Checks	high
121811	Photon OS 1.0: Libtasn1 PHSA-2018-1.0-0109	Nessus	PhotonOS Local Security Checks	high
121278	EulerOS Virtualization 2.5.2 : libtasn1 (EulerOS-SA-2019-1018)	Nessus	Huawei Local Security Checks	high
120994	EulerOS 2.0 SP5 : libtasn1 (EulerOS-SA-2019-1006)	Nessus	Huawei Local Security Checks	high
119934	EulerOS 2.0 SP2 : libtasn1 (EulerOS-SA-2018-1445)	Nessus	Huawei Local Security Checks	high
106661	Debian DSA-4106-1 : libtasn1-6 - security update	Nessus	Debian Local Security Checks	high
106647	Fedora 26 : libtasn1 (2018-ef303deec6)	Nessus	Fedora Local Security Checks	high
106544	openSUSE Security Update : libtasn1 (openSUSE-2018-112)	Nessus	SuSE Local Security Checks	high
106528	SUSE SLED12 / SLES12 Security Update : libtasn1 (SUSE-SU-2018:0295-1)	Nessus	SuSE Local Security Checks	high
106423	Fedora 27 : mingw-libtasn1 (2018-f8c54aeec4)	Nessus	Fedora Local Security Checks	high
106371	Ubuntu 14.04 LTS / 16.04 LTS : Libtasn1 vulnerabilities (USN-3547-1)	Nessus	Ubuntu Local Security Checks	high
106286	Fedora 27 : libtasn1 (2018-da4263f065)	Nessus	Fedora Local Security Checks	high

Detections

Analytics

CVE-2018-6003

high

Tenable Plugins

high

high

high

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high