Ruby 1.8.5-p230/1.8.6-p229/1.8.7-p21/1.9.0-1 rb_str_buf_append numeric error

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.0$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Ruby 1.8.5-p230/1.8.6-p229/1.8.7-p21/1.9.0-1. This vulnerability affects the function rb_str_buf_append. The manipulation leads to numeric error. This vulnerability is documented as CVE-2008-2662. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Ruby 1.8.5-p230/1.8.6-p229/1.8.7-p21/1.9.0-1 (Programming Language Software) and classified as critical. This issue affects the function rb_str_buf_append. The manipulation with an unknown input leads to a numeric error vulnerability. Using CWE to declare the problem leads to CWE-189. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Multiple integer overflows in the rb_str_buf_append function in Ruby 1.8.4 and earlier, 1.8.5 before 1.8.5-p231, 1.8.6 before 1.8.6-p230, 1.8.7 before 1.8.7-p22, and 1.9.0 before 1.9.0-2 allow context-dependent attackers to execute arbitrary code or cause a denial of service via unknown vectors that trigger memory corruption, a different issue than CVE-2008-2663, CVE-2008-2664, and CVE-2008-2725. NOTE: as of 20080624, there has been inconsistent usage of multiple CVE identifiers related to Ruby. This CVE description should be regarded as authoritative, although it is likely to change.

The bug was discovered 06/20/2008. The weakness was released 06/24/2008 with Apple Product Security (Website). The advisory is shared at ruby-lang.org. The identification of this vulnerability is CVE-2008-2662 since 06/10/2008. The exploitation is known to be easy. 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.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 33390 (Ubuntu 6.06 LTS / 7.04 / 7.10 / 8.04 LTS : ruby1.8 vulnerabilities (USN-621-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 117265 (CentOS Security Update for Ruby (CESA-2008:0561)).

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

The vulnerability is also documented in the databases at X-Force (43345), Tenable (33390), SecurityFocus (BID 29903†), OSVDB (46550†) and Secunia (SA30802†). Entries connected to this vulnerability are available at VDB-3775, VDB-3754, VDB-3750 and VDB-3753. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.0

VulDB Base Score: 10.0
VulDB Temp Score: 9.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 33390
Nessus Name: Ubuntu 6.06 LTS / 7.04 / 7.10 / 8.04 LTS : ruby1.8 vulnerabilities (USN-621-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 61362
OpenVAS Name: Debian Security Advisory DSA 1612-1 (ruby1.8)
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: 🔍

Timelineinfo

06/10/2008 🔍
06/20/2008 +10 days 🔍
06/20/2008 +0 days 🔍
06/23/2008 +3 days 🔍
06/23/2008 +0 days 🔍
06/24/2008 +1 days 🔍
06/24/2008 +0 days 🔍
06/26/2008 +2 days 🔍
06/30/2008 +4 days 🔍
07/02/2008 +2 days 🔍
03/16/2015 +2448 days 🔍
08/12/2019 +1610 days 🔍

Sourcesinfo

Advisory: ruby-lang.org
Organization: Apple Product Security
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2008-2662 (🔍)
GCVE (CVE): GCVE-0-2008-2662
GCVE (VulDB): GCVE-100-42881

OVAL: 🔍

X-Force: 43345
SecurityFocus: 29903 - Ruby Multiple Array and String Handling Functions Multiple Arbitrary Code Execution Vulnerabilities
Secunia: 30802
OSVDB: 46550 - CVE-2008-2662 - Ruby - Multiple Integer Overflow Issues
SecurityTracker: 1020347
Vulnerability Center: 18711 - Ruby Integer Overflow in Rb_str_buf_append Function Allows Remote Code Execution and DoS, High
Vupen: ADV-2008-1907

See also: 🔍

Entryinfo

Created: 03/16/2015 17:00
Updated: 08/12/2019 09:51
Changes: 03/16/2015 17:00 (76), 08/12/2019 09:51 (13)
Complete: 🔍
Cache ID: 216:B7E:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to know what is going to be exploited?

We predict KEV entries!