ocaml Compiler 4.04.0/4.04.1 Environment Variable access control

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

Summaryinfo

A vulnerability was found in ocaml Compiler 4.04.0/4.04.1. It has been declared as critical. The impacted element is an unknown function. The manipulation as part of Environment Variable results in access control. This vulnerability is known as CVE-2017-9772. It is possible to launch the attack remotely. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in ocaml Compiler 4.04.0/4.04.1. Affected is some unknown processing. The manipulation as part of a Environment Variable leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Insufficient sanitisation in the OCaml compiler versions 4.04.0 and 4.04.1 allows external code to be executed with raised privilege in binaries marked as setuid, by setting the CAML_CPLUGINS, CAML_NATIVE_CPLUGINS, or CAML_BYTE_CPLUGINS environment variable.

The bug was discovered 06/15/2017. The weakness was published 06/23/2017 (Website). The advisory is shared for download at caml.inria.fr. This vulnerability is traded as CVE-2017-9772 since 06/21/2017. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability was handled as a non-public zero-day exploit for at least 8 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 101647 (Fedora 26 : ocaml (2017-64f47504e4)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (101647) and SecurityFocus (BID 99277†). Similar entry is available at VDB-106193. Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

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: Access control
CWE: CWE-264
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: 101647
Nessus Name: Fedora 26 : ocaml (2017-64f47504e4)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

06/15/2017 🔍
06/21/2017 +6 days 🔍
06/23/2017 +2 days 🔍
06/23/2017 +0 days 🔍
06/24/2017 +1 days 🔍
06/26/2017 +2 days 🔍
07/07/2017 +11 days 🔍
07/17/2017 +10 days 🔍
12/29/2020 +1261 days 🔍

Sourcesinfo

Advisory: caml.inria.fr
Researcher: Eric Milliken
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-9772 (🔍)
GCVE (CVE): GCVE-0-2017-9772
GCVE (VulDB): GCVE-100-102780
SecurityFocus: 99277 - OCaml CVE-2017-9772 Local Privilege Escalation Vulnerability

See also: 🔍

Entryinfo

Created: 06/24/2017 08:40
Updated: 12/29/2020 16:25
Changes: 06/24/2017 08:40 (68), 10/20/2019 09:24 (6), 12/29/2020 16:25 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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