IBM Sterling External Authentication Server XML Data xml external entity reference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.7$5k-$25k0.00

Summaryinfo

A vulnerability classified as critical was found in IBM Sterling External Authentication Server and Sterling Secure Proxy. This affects an unknown part. Such manipulation as part of XML Data leads to xml external entity reference. This vulnerability is uniquely identified as CVE-2020-4462. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in IBM Sterling External Authentication Server and Sterling Secure Proxy (Business Process Management Software) (version unknown). It has been rated as critical. Affected by this issue is an unknown function. The manipulation as part of a XML Data leads to a xml external entity reference vulnerability. Using CWE to declare the problem leads to CWE-611. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. Impacted is confidentiality, integrity, and availability. CVE summarizes:

IBM Sterling External Authentication Server 6.0.1, 6.0.0, 2.4.3.2, and 2.4.2 and IBM Sterling Secure Proxy 6.0.1, 6.0.0, 3.4.3, and 3.4.2 are vulnerable to an XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources. IBM X-Force ID: 181482.

The weakness was disclosed 07/16/2020 (Website). The advisory is shared for download at ibm.com. This vulnerability is handled as CVE-2020-4462 since 12/30/2019. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 07/17/2020). It is expected to see the exploit prices for this product increasing in the near future.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.7

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

NVD Base Score: 8.2
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Xml external entity reference
CWE: CWE-611 / CWE-610
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/30/2019 🔍
07/16/2020 +199 days 🔍
07/17/2020 +1 days 🔍
11/04/2020 +110 days 🔍

Sourcesinfo

Vendor: ibm.com

Advisory: ibm.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-4462 (🔍)
GCVE (CVE): GCVE-0-2020-4462
GCVE (VulDB): GCVE-100-158732
X-Force: 181482

Entryinfo

Created: 07/17/2020 12:31
Updated: 11/04/2020 12:41
Changes: 07/17/2020 12:31 (38), 07/17/2020 12:36 (12), 11/04/2020 12:33 (2), 11/04/2020 12:41 (1)
Complete: 🔍
Cache ID: 216::103

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