VDB-11069 · CVE-2013-6075 · BID 63489

strongSwan up to 5.1.0 utils/identification.c compare_dn ID_DER_ASN1_DN memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

A vulnerability was found in strongSwan (Network Encryption Software). It has been rated as critical. This issue affects the function compare_dn of the file utils/identification.c. The manipulation of the argument ID_DER_ASN1_DN with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is availability. The summary by CVE is:

The compare_dn function in utils/identification.c in strongSwan 4.3.3 through 5.1.1 allows (1) remote attackers to cause a denial of service (out-of-bounds read, NULL pointer dereference, and daemon crash) or (2) remote authenticated users to impersonate arbitrary users and bypass access restrictions via a crafted ID_DER_ASN1_DN ID, related to an "insufficient length check" during identity comparison.

The weakness was shared 11/01/2013 as strongSwan Denial-of-Service Vulnerability and Potential Authorization Bypass as confirmed advisory (Website). The advisory is shared at strongswan.org. The vendor cooperated in the coordination of the public release. The identification of this vulnerability is CVE-2013-6075 since 10/11/2013. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 75193 (openSUSE Security Update : strongswan (openSUSE-SU-2013:1646-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 166641 (SUSE Enterprise Linux Security Update for Strongswan (SUSE-SU-2013:1866-1)).

Upgrading to version 5.1.1 eliminates this vulnerability. The upgrade is hosted for download at strongswan.org. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (75193). strongswan.org is providing further details. The entry 9828 is related to this item.

Productinfo

Type

Name

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 75193
Nessus Name: openSUSE Security Update : strongswan (openSUSE-SU-2013:1646-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 892789
OpenVAS Name: Debian Security Advisory DSA 2789-1 (strongswan - Denial of service and authorization bypass
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: strongSwan 5.1.1

Timelineinfo

10/11/2013 🔍
11/01/2013 +20 days 🔍
11/01/2013 +0 days 🔍
11/01/2013 +0 days 🔍
11/01/2013 +0 days 🔍
11/02/2013 +1 days 🔍
11/05/2013 +3 days 🔍
11/11/2013 +6 days 🔍
06/13/2014 +214 days 🔍
06/01/2021 +2545 days 🔍

Sourcesinfo

Advisory: strongSwan Denial-of-Service Vulnerability and Potential Authorization Bypass
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-6075 (🔍)
OVAL: 🔍

Vulnerability Center: 42232 - strongSwan 4.3.3 - 5.1.0 Remote DoS Vulnerability via a Crafted ID Payload, Medium
SecurityFocus: 63489
Secunia: 55479 - Debian update for strongswan, Moderately Critical
OSVDB: 99253

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 11/05/2013 08:53
Updated: 06/01/2021 16:20
Changes: 11/05/2013 08:53 (82), 05/15/2017 11:11 (2), 06/01/2021 16:13 (4), 06/01/2021 16:20 (1)
Complete: 🔍

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