cURL/libcURL up to 7.50.3 curl_easy_unescape out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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7.6$0-$5k0.00

Summaryinfo

A vulnerability was found in cURL and libcURL up to 7.50.3 and classified as problematic. Affected by this vulnerability is the function curl_easy_unescape of the component URL Handler. The manipulation results in out-of-bounds write. This vulnerability was named CVE-2016-8622. The attack may be performed from remote. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in cURL and libcURL up to 7.50.3 (Network Utility Software). Affected is the function curl_easy_unescape of the component URL Handler. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was presented 11/03/2016 with Cure53 as 7.50.3 vulnerabilities as confirmed advisory (Website). The advisory is available at curl.haxx.se. This vulnerability is traded as CVE-2016-8622 since 10/12/2016. The exploitability is told to be easy. Local access is required to approach this attack. A authentication is needed for exploitation. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 94572 (SUSE SLES11 Security Update : curl (SUSE-SU-2016:2714-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157987 (Oracle Enterprise Linux Security Update for curl (ELSA-2019-4652)).

Upgrading to version 7.51.0 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (94572), SecurityFocus (BID 94105†) and SecurityTracker (ID 1037192†). See VDB-90449, VDB-91385, VDB-91680 and VDB-91681 for similar entries. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.6

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

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 3.7
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 94572
Nessus Name: SUSE SLES11 Security Update : curl (SUSE-SU-2016:2714-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 801105
OpenVAS Name: Apple Mac OS X Multiple Vulnerabilities-01 February-2017
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: 🔍

Upgrade: cURL/libcURL 7.51.0

Timelineinfo

10/12/2016 🔍
11/02/2016 +21 days 🔍
11/03/2016 +1 days 🔍
11/03/2016 +0 days 🔍
11/03/2016 +0 days 🔍
11/04/2016 +1 days 🔍
11/04/2016 +0 days 🔍
07/31/2018 +634 days 🔍
09/29/2022 +1521 days 🔍

Sourcesinfo

Advisory: 7.50.3 vulnerabilities
Organization: Cure53
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-8622 (🔍)
GCVE (CVE): GCVE-0-2016-8622
GCVE (VulDB): GCVE-100-93258

OVAL: 🔍

SecurityFocus: 94105 - cURL/libcURL CVE-2016-8622 Remote Security Bypass Vulnerability
SecurityTracker: 1037192

See also: 🔍

Entryinfo

Created: 11/04/2016 09:53
Updated: 09/29/2022 11:56
Changes: 11/04/2016 09:53 (60), 05/23/2019 18:32 (26), 09/29/2022 11:48 (4), 09/29/2022 11:56 (12)
Complete: 🔍
Cache ID: 216:D61:103

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