Opera Web Browser up to 12.12 GIF Decoder Opera.dll memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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8.7$0-$5k0.00

Summaryinfo

A vulnerability has been found in Opera Web Browser up to 12.12 and classified as critical. This vulnerability affects unknown code in the library Opera.dll of the component GIF Decoder. This manipulation causes memory corruption. This vulnerability is tracked as CVE-2012-6470. The attack is possible to be carried out remotely. Moreover, an exploit is present. It is recommended to replace the affected component with an alternative.

Detailsinfo

A vulnerability has been found in Opera Web Browser up to 12.12 (Web Browser) and classified as very critical. Affected by this vulnerability is an unknown part in the library Opera.dll of the component GIF Decoder. 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 summary by CVE is:

Opera before 12.12 does not properly allocate memory for GIF images, which allows remote attackers to execute arbitrary code or cause a denial of service (memory overwrite) via a malformed image.

The weakness was disclosed 12/04/2012 by Kaveh Ghaemmaghami (coolkaveh) as 54 as not defined posting (Full-Disclosure). It is possible to read the advisory at seclists.org. The vendor was not involved in the public release. This vulnerability is known as CVE-2012-6470 since 01/02/2013. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details and also a public exploit are known. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/13/2025).

A public exploit has been developed by coolkaveh and been published before and not just after the advisory. It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 63301 (Opera < 12.12 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows.

The problem might be mitigated by replacing the product with Firefox, Chrome or Internet Explorer as an alternative. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (23107), Tenable (63301), SecurityFocus (BID 56788†), OSVDB (88101†) and Secunia (SA51462†). The entries VDB-7210, VDB-7211, VDB-63297 and VDB-63296 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.6
VulDB Meta Temp Score: 8.7

VulDB Base Score: 9.6
VulDB Temp Score: 8.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 63301
Nessus Name: Opera < 12.12 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 803140
OpenVAS Name: Opera Multiple Vulnerabilities-01 Jan13 (Linux)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Alternative
Status: 🔍

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

Alternative: Firefox/Chrome/Internet Explorer

Timelineinfo

12/03/2012 🔍
12/03/2012 +0 days 🔍
12/04/2012 +1 days 🔍
12/06/2012 +2 days 🔍
12/10/2012 +4 days 🔍
12/18/2012 +8 days 🔍
12/19/2012 +1 days 🔍
01/02/2013 +14 days 🔍
01/02/2013 +0 days 🔍
07/13/2025 +4575 days 🔍

Sourcesinfo

Vendor: opera.com

Advisory: 54
Researcher: Kaveh Ghaemmaghami (coolkaveh)
Status: Not defined
Confirmation: 🔍

CVE: CVE-2012-6470 (🔍)
GCVE (CVE): GCVE-0-2012-6470
GCVE (VulDB): GCVE-100-7087

OVAL: 🔍

SecurityFocus: 56788 - Opera Web Browser Memory Corruption Vulnerability
Secunia: 51462 - Opera Multiple Vulnerabilities, Highly Critical
OSVDB: 88101

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

Entryinfo

Created: 12/10/2012 11:00
Updated: 07/13/2025 05:37
Changes: 12/10/2012 11:00 (78), 04/22/2019 10:52 (3), 04/20/2021 07:28 (7), 04/20/2021 07:34 (1), 07/13/2025 05:37 (18)
Complete: 🔍
Committer: olku
Cache ID: 216:832:103

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