Apache Tapestry 5.3.6 HMAC Verification input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.0$0-$5k0.00

A vulnerability was found in Apache Tapestry 5.3.6. It has been declared as critical. This vulnerability affects an unknown function of the component HMAC Verification. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The code which checks HMAC in form submissions used String.equals() for comparisons, which results in a timing side channel for the comparison of the HMAC signatures. This could lead to remote code execution if an attacker is able to determine the correct signature for their payload. The comparison should be done with a constant time algorithm instead.

The bug was discovered 03/12/2019. The weakness was published 08/23/2019 by David Tomaschik as CVE-2019-10071: Timing Attack in HMAC Verification in Apache Tapestry as not defined mailinglist post (Full-Disclosure). The advisory is available at seclists.org. This vulnerability was named CVE-2019-10071 since 03/26/2019. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/11/2020).

The vulnerability was handled as a non-public zero-day exploit for at least 38 days. During that time the estimated underground price was around $5k-$25k.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at d3928ad44714b949d247af2652c84dae3c27e1b1. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.4

VulDB Base Score: 9.8
VulDB Temp Score: 9.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

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Exploitinginfo

Class: Input validation
CWE: CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍

Patch: d3928ad44714b949d247af2652c84dae3c27e1b1

Timelineinfo

03/12/2019 🔍
03/13/2019 +1 days 🔍
03/26/2019 +13 days 🔍
04/19/2019 +24 days 🔍
08/23/2019 +126 days 🔍
09/03/2019 +11 days 🔍
08/11/2020 +343 days 🔍

Sourcesinfo

Vendor: apache.org

Advisory: CVE-2019-10071: Timing Attack in HMAC Verification in Apache Tapestry
Researcher: David Tomaschik
Status: Not defined

CVE: CVE-2019-10071 (🔍)

Entryinfo

Created: 09/03/2019 07:11
Updated: 08/11/2020 16:30
Changes: 09/03/2019 07:11 (63), 08/11/2020 16:30 (1)
Complete: 🔍

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