PHKP phkp.php pgp_exec command injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.2$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in PHKP. This affects the function pgp_exec of the file phkp.php. The manipulation leads to command injection. This vulnerability is uniquely identified as CVE-2018-1000885. The attack is possible to be carried out remotely. No exploit exists. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in PHKP (affected version not known). This issue affects the function pgp_exec of the file phkp.php. The manipulation with an unknown input leads to a command injection vulnerability. Using CWE to declare the problem leads to CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

PHKP version including commit 88fd9cfdf14ea4b6ac3e3967feea7bcaabb6f03b contains a Improper Neutralization of Special Elements used in a Command ('Command Injection') vulnerability in function pgp_exec() phkp.php:98 that can result in It is possible to manipulate gpg-keys or execute commands remotely. This attack appear to be exploitable via HKP-Api: /pks/lookup?search.

The bug was discovered 10/08/2018. The weakness was disclosed 12/20/2018 (Website). It is possible to read the advisory at tech.feedyourhead.at. The identification of this vulnerability is CVE-2018-1000885 since 12/20/2018. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 73 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:phkp.php it is possible to find vulnerable targets with Google Hacking.

Applying the patch 88fd9cfdf14ea4b6ac3e3967feea7bcaabb6f03b is able to eliminate this problem.

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

Productinfo

Name

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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Command injection
CWE: CWE-77 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 88fd9cfdf14ea4b6ac3e3967feea7bcaabb6f03b

Timelineinfo

10/08/2018 🔍
12/20/2018 +73 days 🔍
12/20/2018 +0 days 🔍
12/20/2018 +0 days 🔍
12/21/2018 +1 days 🔍
04/22/2020 +488 days 🔍

Sourcesinfo

Advisory: tech.feedyourhead.at
Status: Not defined

CVE: CVE-2018-1000885 (🔍)
GCVE (CVE): GCVE-0-2018-1000885
GCVE (VulDB): GCVE-100-128207

Entryinfo

Created: 12/21/2018 11:54
Updated: 04/22/2020 16:47
Changes: 12/21/2018 11:54 (57), 04/22/2020 16:47 (1)
Complete: 🔍
Cache ID: 216::103

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