# What is CVE-2018-0140?

> CVE-2018-0140 is a medium-severity flaw (CVSS 6.5) in Content Security Management Appliance from Cisco, published on 8 February 2018. It is not on the list of flaws known to be exploited today. The latest forecast puts its chance of use in the next 30 days at 1.6%. If you run an affected version, plan in the vendor’s fix.

Canonical page: https://www.precursorintelligence.com/what-is/cve-2018-0140

## At a glance

- **Verdict:** Plan it in. No sign of exploitation and a low forecast. Patch it in your normal update cycle.
- **Precursor Intelligence risk score:** 23 out of 100 (Low); action: Monitor. Kept up to date as the evidence changes.
- **Severity:** Medium (CVSS 6.5 out of 10)
- **Known to be exploited:** No, not on the list of flaws known to be exploited today
- **Chance of use in the next 30 days:** 1.6% (latest exploit-likelihood forecast)
- **Published:** 8 February 2018
- **Record last updated:** 21 February 2023
- **Main product:** Content Security Management Appliance from Cisco
- **Affected products:** 19

## What is CVE-2018-0140? In plain terms

It can be attacked from anywhere on the internet with an ordinary user account, and nobody has to click anything. If it works, the attacker can read data.

### The official description

A vulnerability in the spam quarantine of Cisco Email Security Appliance and Cisco Content Security Management Appliance could allow an authenticated, remote attacker to download any message from the spam quarantine by modifying browser string information. The vulnerability is due to a lack of verification of authenticated user accounts. An attacker could exploit this vulnerability by modifying browser strings to see messages submitted by other users to the spam quarantine within their company. Cisco Bug IDs: CSCvg39759, CSCvg42295.

### What kind of flaw is it?

- CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
- CWE-425: Direct Request ('Forced Browsing')

### How an attack on it works

- Where an attacker can be: Anywhere on the internet
- How hard it is to pull off: Easy: no special conditions
- Login needed first: An ordinary user account
- Does someone have to click: No, nobody has to do anything
- What an attacker gets: Can read data

Severity vector: `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N`

## Is CVE-2018-0140 being exploited? Not that we know of

It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 1.6%. That can change at any time, which is why we keep watching.

Exploit likelihood over the last 7 days: 1.6%, 1.6%, 1.6%, 1.6%, 1.6%, 1.6%, 1.6%.

### Timeline

- 8 February 2018: Published
- 21 February 2023: Record last updated

### How Precursor Intelligence ranks it

CVE-2018-0140 scores **23 out of 100 (Low)**, with the action "Monitor".

Every published flaw gets a risk score from 0 to 100, kept up to date as the evidence changes. Four things go into the score, from the one that counts most to the ones that count less:

- Evidence it is being exploited: biggest factor
- How severe it is: strong factor
- How widely exposed it is: smaller factor
- Threat activity around it: smaller factor

85 and above is Critical. Anything confirmed as exploited is always marked for an emergency patch, whatever its score. When this flaw matches software you track, it lands in your list with its score and the reasons behind it.

## Who is affected by CVE-2018-0140?

The published record lists 19 products.

- [Content Security Management Appliance](https://www.precursorintelligence.com/product/cisco/content_security_management_appliance) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): 10.0.0-096, 10.1.0-037, 10.1.0-052, 11.0.0-115
- [Email Security Appliance Firmware](https://www.precursorintelligence.com/product/cisco/email_security_appliance_firmware) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): 9.8.0-112, 10.0.1-087, 11.0.0-274
- [Content Security Management Appliance Sma M190](https://www.precursorintelligence.com/product/cisco/content_security_management_appliance_sma_m190) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified
- [Content Security Management Appliance Sma M390](https://www.precursorintelligence.com/product/cisco/content_security_management_appliance_sma_m390) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified
- [Content Security Management Appliance Sma M390x](https://www.precursorintelligence.com/product/cisco/content_security_management_appliance_sma_m390x) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified
- [Content Security Management Appliance Sma M690](https://www.precursorintelligence.com/product/cisco/content_security_management_appliance_sma_m690) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified
- [Content Security Management Appliance Sma M690x](https://www.precursorintelligence.com/product/cisco/content_security_management_appliance_sma_m690x) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified
- [Email Security Appliance C160](https://www.precursorintelligence.com/product/cisco/email_security_appliance_c160) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified
- [Email Security Appliance C170](https://www.precursorintelligence.com/product/cisco/email_security_appliance_c170) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified
- [Email Security Appliance C190](https://www.precursorintelligence.com/product/cisco/email_security_appliance_c190) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified
- [Email Security Appliance C370](https://www.precursorintelligence.com/product/cisco/email_security_appliance_c370) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified
- [Email Security Appliance C370d](https://www.precursorintelligence.com/product/cisco/email_security_appliance_c370d) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified
- [Email Security Appliance C380](https://www.precursorintelligence.com/product/cisco/email_security_appliance_c380) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified
- [Email Security Appliance C390](https://www.precursorintelligence.com/product/cisco/email_security_appliance_c390) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified
- [Email Security Appliance C670](https://www.precursorintelligence.com/product/cisco/email_security_appliance_c670) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified
- [Email Security Appliance C680](https://www.precursorintelligence.com/product/cisco/email_security_appliance_c680) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified
- [Email Security Appliance C690](https://www.precursorintelligence.com/product/cisco/email_security_appliance_c690) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified
- [Email Security Appliance C690x](https://www.precursorintelligence.com/product/cisco/email_security_appliance_c690x) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified
- [Email Security Appliance X1070](https://www.precursorintelligence.com/product/cisco/email_security_appliance_x1070) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified

## How do I fix CVE-2018-0140?

1. **Check whether you run it.** Compare your versions with the affected products above. Not sure what you run? Precursor Intelligence can work it out from your public website, or you can pick it from a list.
2. **Apply the vendor’s fix.** Install the update named in the vendor’s advisory. We’ve put the advisory first in the list.
3. **If you can’t patch today.** Follow any mitigation the vendor publishes, and limit who can reach the affected system from the internet until the update is in.
4. **Keep an eye on it.** Track the product and we tell you as soon as we spot this flaw on the list of exploited flaws, or a jump in its exploit likelihood.

### References

- [tools.cisco.com](https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180207-esacsm) (Vendor advisory)
- [securityfocus.com](http://www.securityfocus.com/bid/103090) (Third-party advisory, Vulnerability database)
- [securitytracker.com](http://www.securitytracker.com/id/1040338) (Third-party advisory, Vulnerability database)
- [securitytracker.com](http://www.securitytracker.com/id/1040339) (Third-party advisory, Vulnerability database)

## Questions

### What is CVE-2018-0140?

CVE-2018-0140 is a medium-severity flaw in Content Security Management Appliance from Cisco, published on 8 February 2018. It can be attacked from anywhere on the internet with an ordinary user account, and nobody has to click anything. If it works, the attacker can read data.

### How serious is CVE-2018-0140?

It scores 6.5 out of 10 on the CVSS severity scale, which is medium. Our risk score for CVE-2018-0140 is 23 out of 100, which is Low. Its action is "Monitor". No sign of exploitation and a low forecast. Patch it in your normal update cycle.

### Is CVE-2018-0140 being exploited?

It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 1.6%. That can change at any time, which is why we keep watching.

### Which versions does CVE-2018-0140 affect?

For Content Security Management Appliance from Cisco: 10.0.0-096, 10.1.0-037, 10.1.0-052, 11.0.0-115. The record lists 19 products in all, each with its versions, under "Who is affected" on this page.

### How do I fix CVE-2018-0140?

Install the update the vendor names in its advisory, linked first under "How do I fix" on this page. If you can't patch today, follow the vendor's mitigation and limit who can reach the affected system from the internet.

## Does CVE-2018-0140 affect you?

Precursor Intelligence keeps checking for you:

- **Tell us what you run.** Pick your software from a list, or let us work it out from your website.
- **We match it to every flaw.** Over 400,000 published flaws, checked against your list.
- **Ranked by real-world risk.** Every flaw gets a 0 to 100 risk score, kept up to date, led by evidence criminals are using it.
- **Told as soon as we know.** An alert by email, in the app or by webhook to your own tools.

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