VDB-122943 · CVE-2018-0419 · BID 105112

Cisco Email Security Appliance Attachment Detection Email Message input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.4$5k-$25k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Cisco Email Security Appliance. The impacted element is an unknown function of the component Attachment Detection. Performing a manipulation as part of Email Message results in input validation. This vulnerability was named CVE-2018-0419. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as critical, was found in Cisco Email Security Appliance (Anti-Malware Software) (affected version not known). This affects some unknown functionality of the component Attachment Detection. The manipulation as part of a Email Message leads to a input validation vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability in certain attachment detection mechanisms of Cisco Email Security Appliances (ESA) could allow an unauthenticated, remote attacker to bypass the filtering functionality of an affected system. The vulnerability is due to the improper detection of content within executable (EXE) files. An attacker could exploit this vulnerability by sending a customized EXE file that is not recognized and blocked by the ESA. A successful exploit could allow an attacker to send email messages that contain malicious executable files to unsuspecting users. Cisco Bug IDs: CSCvh03786.

The bug was discovered 08/15/2018. The weakness was presented 08/15/2018 as cisco-sa-20180815-esa-file-byp as confirmed advisory (Website). It is possible to read the advisory at tools.cisco.com. This vulnerability is uniquely identified as CVE-2018-0419 since 11/26/2017. 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 pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 05/02/2023).

The commercial vulnerability scanner Qualys is able to test this issue with plugin 316309 (Cisco Email Security Appliance EXE File Scanning Bypass Vulnerability(cisco-sa-20180815-esa-file-bypass)).

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 105112†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
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: Input validation
CWE: 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

11/26/2017 🔍
08/15/2018 +261 days 🔍
08/15/2018 +0 days 🔍
08/15/2018 +0 days 🔍
08/15/2018 +0 days 🔍
08/16/2018 +1 days 🔍
05/02/2023 +1720 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20180815-esa-file-byp
Status: Confirmed

CVE: CVE-2018-0419 (🔍)
GCVE (CVE): GCVE-0-2018-0419
GCVE (VulDB): GCVE-100-122943
SecurityFocus: 105112 - Cisco Email Security Appliance EXE File Scanning CVE-2018-0419 Remote Security Bypass Vulnerability
SecurityTracker: 1041531

Entryinfo

Created: 08/16/2018 06:21
Updated: 05/02/2023 09:56
Changes: 08/16/2018 06:21 (62), 03/16/2020 07:54 (3), 05/02/2023 09:56 (3)
Complete: 🔍
Cache ID: 216::103

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

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