VDB-127275 · CVE-2018-17156 · BID 106052

FreeBSD up to 11.2 on 64-bit ICMP Reply Packet out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in FreeBSD up to 11.2 on 64-bit. Impacted is an unknown function of the component ICMP Reply Handler. Performing a manipulation as part of Packet results in out-of-bounds write. This vulnerability is known as CVE-2018-17156. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in FreeBSD up to 11.2 on 64-bit (Operating System). It has been classified as problematic. This affects an unknown functionality of the component ICMP Reply Handler. The manipulation as part of a Packet leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on availability. The summary by CVE is:

In FreeBSD before 11.2-STABLE(r340268) and 11.2-RELEASE-p5, due to incorrectly accounting for padding on 64-bit platforms, a buffer underwrite could occur when constructing an ICMP reply packet when using a non-standard value for the net.inet.icmp.quotelen sysctl.

The bug was discovered 11/27/2018. The weakness was published 11/28/2018 (Website). It is possible to read the advisory at security.freebsd.org. This vulnerability is uniquely identified as CVE-2018-17156 since 09/18/2018. 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 was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k.

Upgrading to version 11.2-STABLE(r340268) or 11.2-RELEASE-p5 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 106052†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
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: Out-of-bounds write
CWE: CWE-787 / 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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: FreeBSD 11.2-STABLE(r340268)/11.2-RELEASE-p5

Timelineinfo

09/18/2018 🔍
11/27/2018 +70 days 🔍
11/28/2018 +1 days 🔍
11/28/2018 +0 days 🔍
11/28/2018 +0 days 🔍
11/29/2018 +1 days 🔍
04/16/2020 +504 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: security.freebsd.org
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-17156 (🔍)
GCVE (CVE): GCVE-0-2018-17156
GCVE (VulDB): GCVE-100-127275
SecurityFocus: 106052 - FreeBSD CVE-2018-17156 Denial Of Service Vulnerability

Entryinfo

Created: 11/29/2018 07:53
Updated: 04/16/2020 06:40
Changes: 11/29/2018 07:53 (62), 04/16/2020 06:40 (4)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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