SSH CRC-32 detect_attack memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in SSH. Affected by this vulnerability is the function detect_attack of the component CRC-32 Handler. This manipulation causes memory corruption. Furthermore, an exploit is available.

Detailsinfo

A vulnerability has been found in SSH (SSH Server Software) (affected version not known) and classified as critical. Affected by this vulnerability is the function detect_attack of the component CRC-32 Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was published 02/08/2001 by Michal Zalewski with BindView (Website). It is possible to read the advisory at www1.corest.com. The attack can be launched remotely. Technical details and also a public exploit are known.

After 2 weeks, there has been an exploit disclosed. It is possible to download the exploit at archives.neohapsis.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Attack attempts may be identified with Snort ID 1327.

The vulnerability is also documented in the databases at X-Force (6083), Exploit-DB (349), SecurityFocus (BID 2347†) and OSVDB (795†). Similar entries are available at VDB-16547 and VDB-20246. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍
Snort ID: 1327

Timelineinfo

02/07/2001 🔍
02/08/2001 +0 days 🔍
02/21/2001 +13 days 🔍
09/12/2002 +568 days 🔍
04/11/2016 +4959 days 🔍
10/01/2018 +903 days 🔍

Sourcesinfo

Advisory: www1.corest.com
Researcher: Michal Zalewski
Organization: BindView
Status: Not defined

GCVE (VulDB): GCVE-100-81895
X-Force: 6083
SecurityFocus: 2347 - SSH CRC-32 Compensation Attack Detector Vulnerability
OSVDB: 795 - Multiple Vendor SSH CRC-32 detect_attack() Function Overflow

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

Entryinfo

Created: 04/11/2016 14:48
Updated: 10/01/2018 10:55
Changes: 04/11/2016 14:48 (44), 10/01/2018 10:55 (10)
Complete: 🔍
Cache ID: 216:344:103

Be aware that VulDB is the high quality source for vulnerability data.

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