cURL/libcURL up to 7.56.x on 32-bit SSL Library memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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8.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in cURL and libcURL up to 7.56.x on 32-bit. Affected by this vulnerability is an unknown functionality of the component SSL Library. Performing a manipulation results in memory corruption. This vulnerability is known as CVE-2017-8818. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in cURL and libcURL up to 7.56.x on 32-bit (Network Utility Software). This affects an unknown functionality of the component SSL Library. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

curl and libcurl before 7.57.0 on 32-bit platforms allow attackers to cause a denial of service (out-of-bounds access and application crash) or possibly have unspecified other impact because too little memory is allocated for interfacing to an SSL library.

The bug was discovered 11/29/2017. The weakness was published 11/29/2017 (Website). It is possible to read the advisory at curl.haxx.se. This vulnerability is uniquely identified as CVE-2017-8818 since 05/07/2017. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 104860 (Slackware 14.0 / 14.1 / 14.2 / current : curl (SSA:2017-333-03)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Slackware Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 351506 (Amazon Linux Security Advisory for curl: ALAS2-2019-1162).

Upgrading to version 7.57.0 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 (104860) and SecurityFocus (BID 102014†). Similar entries are available at VDB-110053 and VDB-115419. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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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: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 104860
Nessus Name: Slackware 14.0 / 14.1 / 14.2 / current : curl (SSA:2017-333-03)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

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 7.57.0

Timelineinfo

05/07/2017 🔍
11/29/2017 +206 days 🔍
11/29/2017 +0 days 🔍
11/29/2017 +0 days 🔍
11/29/2017 +0 days 🔍
11/29/2017 +0 days 🔍
11/30/2017 +1 days 🔍
11/30/2017 +0 days 🔍
01/25/2021 +1152 days 🔍

Sourcesinfo

Advisory: curl.haxx.se
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-8818 (🔍)
GCVE (CVE): GCVE-0-2017-8818
GCVE (VulDB): GCVE-100-110055
SecurityFocus: 102014 - cURL/libcURL CVE-2017-8818 Out of Bounds Read Denial of Service Vulnerability
SecurityTracker: 1039898

See also: 🔍

Entryinfo

Created: 11/30/2017 08:13
Updated: 01/25/2021 10:57
Changes: 11/30/2017 08:13 (71), 12/11/2019 09:48 (5), 01/25/2021 10:57 (3)
Complete: 🔍
Cache ID: 216::103

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

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