ImageMagick Improper Input Validation
CVE-2016-3714 is a high-severity improper input validation vulnerability in imagemagick, with a CVSS 3.1 base score of 8.4 out of 10. It can be exploited with local access to the system by an unauthenticated attacker, without any action from a user. Affected imagemagick versions: 6.9.3-9 and earlier; 7.0.0-0; 7.0.1-0. The record does not name a fixed version, so check the vendor advisory. CISA added it to the Known Exploited Vulnerabilities catalogue on September 9, 2024, which means attacks have been observed in the wild.
Attackers are already exploiting this vulnerability, according to CISA.
What to do
- Check which version of imagemagick you run against the affected versions below, and install the vendor's latest release.
- CISA's required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- Read the advisory on imagetragick.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| ImageMagick | imagemagick | 6.9.3-9 and earlier; 7.0.0-0; 7.0.1-0 | Not stated |
| Canonical | ubuntu_linux | 12.04; 14.04; 15.10; 16.04 | Not stated |
| Debian | debian_linux | 8.0; 9.0 | Not stated |
| openSUSE | opensuse | 13.2 | Not stated |
| openSUSE | leap | 42.1 | Not stated |
| SUSE | suse_linux_enterprise_server | 12 | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 8.4 | High | NVD |
| CVSS 3.1 | 8.4 | High | CISA (ADP) |
| CVSS 2.0 | 10.0 | High | NVD |
Official description
The (1) EPHEMERAL, (2) HTTPS, (3) MVG, (4) MSL, (5) TEXT, (6) SHOW, (7) WIN, and (8) PLT coders in ImageMagick before 6.9.3-10 and 7.x before 7.0.1-1 allow remote attackers to execute arbitrary code via shell metacharacters in a crafted image, aka "ImageTragick."
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Input Validation
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.
How developers prevent this class of flaw
- Consider using language-theoretic security (LangSec) techniques that characterize inputs using a formal language and build recognizers for that language. This effectively requires parsing to be a distinct layer that effectively enforces a boundary between raw input and internal data representations, instead of allowing parser code to be scattered throughout the program, where it could be subject to errors or inconsistencies that create weaknesses.
- Use an input validation framework such as Struts or the OWASP ESAPI Validation API. Note that using a framework does not automatically address all input validation problems; be mindful of weaknesses that could arise from misusing the framework itself (CWE-1173).
- Understand all the potential areas where untrusted inputs can enter the product, including but not limited to: parameters or arguments, cookies, anything read from the network, environment variables, reverse DNS lookups, query results, request headers, URL components, e-mail, files, filenames, databases, and any external systems that provide data to the application. Remember that such inputs may be obtained indirectly through API calls.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: active, automatable: yes, technical impact: total).
- Added to CISA's Known Exploited Vulnerabilities catalogue.
- Deadline for US federal agencies to remediate, set by CISA.
- Record last changed materially (score, affected products, status or references).
References
Advisories
Patches and release notes
Third-party and government advisories
- lists.opensuse.org/opensuse-security-announce/2016-05/msg00024.htmlThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2016-05/msg00025.htmlThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2016-05/msg00028.htmlThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2016-05/msg00032.htmlThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2016-05/msg00041.htmlThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2016-05/msg00051.htmlThird Party Advisory
- packetstormsecurity.com/files/152364/ImageTragick-ImageMagick-Proof-Of-Concepts.htmlThird Party Advisory, VDB Entry
- rhn.redhat.com/errata/RHSA-2016-0726.htmlThird Party Advisory
- debian.org/security/2016/dsa-3580Third Party Advisory
- debian.org/security/2016/dsa-3746Third Party Advisory
- oracle.com/technetwork/topics/security/bulletinjul2016-3090568.htmlThird Party Advisory
- oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.htmlThird Party Advisory
- rapid7.com/db/modules/exploit/unix/fileformat/imagemagick_delegateThird Party Advisory
- securityfocus.com/archive/1/538378/100/0/threadedThird Party Advisory, VDB Entry
- securityfocus.com/bid/89848Third Party Advisory, VDB Entry
Other references
- openwall.com/lists/oss-security/2016/05/03/13Mailing List
- openwall.com/lists/oss-security/2016/05/03/18Mailing List
- bugzilla.redhat.com/show_bug.cgi?id=1332492Issue Tracking
Other vulnerabilities in imagemagick
- 7.5 High severity
- 8.1 High severity
- 7.5 High severity
Recent Improper Input Validation vulnerabilities
- 8.8 High severity
Linux Kernel Improper Input Validation Exploited
- 7.8 High severity
- 7.8 High severity
- 4.3 Medium severity
- 8.8 High severity
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