VDB-126575 · CVE-2018-15381 · BID 105876

Cisco Unity Express Serialized Java Object deserialization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.8$5k-$25k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Cisco Unity Express. This impacts an unknown function. The manipulation as part of Serialized Java Object leads to deserialization. This vulnerability is referenced as CVE-2018-15381. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Cisco Unity Express (affected version unknown). It has been rated as very critical. This issue affects an unknown functionality. The manipulation as part of a Serialized Java Object leads to a deserialization vulnerability. Using CWE to declare the problem leads to CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A Java deserialization vulnerability in Cisco Unity Express (CUE) could allow an unauthenticated, remote attacker to execute arbitrary shell commands with the privileges of the root user. The vulnerability is due to insecure deserialization of user-supplied content by the affected software. An attacker could exploit this vulnerability by sending a malicious serialized Java object to the listening Java Remote Method Invocation (RMI) service. A successful exploit could allow the attacker to execute arbitrary commands on the device with root privileges.

The bug was discovered 11/07/2018. The weakness was published 11/08/2018 as cisco-sa-20181107-cue as confirmed advisory (Website). It is possible to read the advisory at tools.cisco.com. The identification of this vulnerability is CVE-2018-15381 since 08/17/2018. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 06/05/2023).

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. The commercial vulnerability scanner Qualys is able to test this issue with plugin 316383 (Cisco Unity Express Arbitrary Command Execution Vulnerability(cisco-sa-20181107-cue)).

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

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 105876†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

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

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 9.8
CNA Vector (Cisco Systems, Inc.): 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
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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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/17/2018 🔍
11/07/2018 +82 days 🔍
11/07/2018 +0 days 🔍
11/08/2018 +1 days 🔍
11/08/2018 +0 days 🔍
11/09/2018 +1 days 🔍
06/05/2023 +1669 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20181107-cue
Status: Confirmed

CVE: CVE-2018-15381 (🔍)
GCVE (CVE): GCVE-0-2018-15381
GCVE (VulDB): GCVE-100-126575
SecurityFocus: 105876 - Cisco Unity Express CVE-2018-15381 Arbitrary Command Execution Vulnerability
SecurityTracker: 1042130

Entryinfo

Created: 11/09/2018 07:43
Updated: 06/05/2023 09:27
Changes: 11/09/2018 07:43 (61), 04/11/2020 07:31 (3), 06/05/2023 09:23 (3), 06/05/2023 09:27 (10)
Complete: 🔍
Cache ID: 216::103

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

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