SILC silc-server 1.0.2 silc_server_cmd_func null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in SILC silc-server 1.0.2. This vulnerability affects the function silc_server_cmd_func. Executing a manipulation can lead to null pointer dereference. This vulnerability is registered as CVE-2007-1327. Furthermore, an exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in SILC silc-server 1.0.2 and classified as critical. This vulnerability affects the function silc_server_cmd_func. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. CVE summarizes:

The SILC_SERVER_CMD_FUNC function in apps/silcd/command.c in silc-server 1.0.2 allows remote attackers to cause a denial of service (NULL dereference and daemon crash) via a request without a cipher algorithm and an invalid HMAC algorithm.

The bug was discovered 03/06/2007. The weakness was published 03/06/2007 (Website). The advisory is shared for download at marc.theaimsgroup.com. This vulnerability was named CVE-2007-1327 since 03/07/2007. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 24829 (GLSA-200703-12 : SILC Server: Denial of Service), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (32846), Exploit-DB (29716), Tenable (24829), SecurityFocus (BID 22846†) and OSVDB (33887†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

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Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.5
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

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Price Prediction: 🔍
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Nessus ID: 24829
Nessus Name: GLSA-200703-12 : SILC Server: Denial of Service
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 58129
OpenVAS Name: Gentoo Security Advisory GLSA 200703-12 (silc-server)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Timelineinfo

03/06/2007 🔍
03/06/2007 +0 days 🔍
03/06/2007 +0 days 🔍
03/06/2007 +0 days 🔍
03/07/2007 +0 days 🔍
03/07/2007 +0 days 🔍
03/07/2007 +0 days 🔍
03/07/2007 +0 days 🔍
03/14/2007 +6 days 🔍
03/16/2007 +2 days 🔍
03/21/2007 +5 days 🔍
03/13/2015 +2914 days 🔍
12/28/2024 +3578 days 🔍

Sourcesinfo

Advisory: marc.theaimsgroup.com
Status: Confirmed

CVE: CVE-2007-1327 (🔍)
GCVE (CVE): GCVE-0-2007-1327
GCVE (VulDB): GCVE-100-35500
X-Force: 32846
SecurityFocus: 22846 - Silc Server New Channel Remote Denial Of Service Vulnerability
Secunia: 24431 - SILC Server Invalid hmac/cipher Denial of Service, Moderately Critical
OSVDB: 33887 - SILC Server Malformed HMAC/cipher Remote DoS
Vulnerability Center: 14673 - SILC Server Denial of Service via Request with a Crafted HMAC Alogrithm, Medium

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/13/2015 12:16
Updated: 12/28/2024 16:21
Changes: 03/13/2015 12:16 (75), 07/16/2019 21:58 (4), 07/13/2021 18:02 (3), 12/28/2024 16:21 (25)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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