bitlbee-libpurple up to 3.5.0 File Transfer null pointer dereference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.4$0-$5k0.00

Summaryinfo

A vulnerability was found in bitlbee-libpurple up to 3.5.0. It has been classified as critical. Impacted is an unknown function of the component File Transfer Handler. The manipulation leads to null pointer dereference. This vulnerability is traded as CVE-2017-5668. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in bitlbee-libpurple up to 3.5.0. This issue affects an unknown code block of the component File Transfer Handler. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

bitlbee-libpurple before 3.5.1 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) and possibly execute arbitrary code via a file transfer request for a contact that is not in the contact list. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-10189.

The bug was discovered 01/30/2017. The weakness was shared 03/14/2017 (oss-sec). The advisory is shared at openwall.com. The identification of this vulnerability is CVE-2017-5668 since 01/31/2017. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/15/2017).

The vulnerability was handled as a non-public zero-day exploit for at least 21 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 97356 (Debian DLA-832-1 : bitlbee security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l.

Upgrading to version 3.5.1 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (97356) and SecurityFocus (BID 95932†). The entries VDB-97918 and VDB-97919 are related to this item. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 97356
Nessus Name: Debian DLA-832-1 : bitlbee security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 53118
OpenVAS Name: Debian LTS Advisory ([SECURITY] [DLA 832-1] bitlbee security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: bitlbee-libpurple 3.5.1

Timelineinfo

01/30/2017 🔍
01/31/2017 +1 days 🔍
02/01/2017 +1 days 🔍
02/20/2017 +19 days 🔍
02/24/2017 +4 days 🔍
03/14/2017 +18 days 🔍
03/14/2017 +0 days 🔍
03/15/2017 +1 days 🔍
03/15/2017 +0 days 🔍

Sourcesinfo

Advisory: openwall.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-5668 (🔍)
GCVE (CVE): GCVE-0-2017-5668
GCVE (VulDB): GCVE-100-97949
SecurityFocus: 95932 - BitlBee Incomplete Fix CVE-2017-5668 Denial of Service Vulnerability
OSVDB: - CVE-2017-5668 - bitlbee-libpurple - Denial of Service Issue

See also: 🔍

Entryinfo

Created: 03/15/2017 08:05
Changes: 03/15/2017 08:05 (77)
Complete: 🔍
Cache ID: 216:31B:103

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