CyberSecBulletin
CVE-2011-0611Exploited in the wildNVD status: Analyzed

Adobe Flash Player Remote Code Execution

Published Updated By the CyberSecBulletin desk

CVE-2011-0611 is a high-severity access of resource using incompatible type vulnerability in flash_player from Adobe, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, but only if a user takes part, for example by opening a link or file. The record lists version 10.2.154.27 as the first without the flaw, so updating flash_player to that release or later removes the exposure. CISA added it to the Known Exploited Vulnerabilities catalogue on March 3, 2022, which means attacks have been observed in the wild.

Patch now

Attackers are already exploiting this vulnerability, according to CISA.

What to do

  1. Update flash_player to 10.2.154.27 or a later version.
  2. Update air to 2.6.19140 or a later version.
  3. Update reader to 9.4.4 or 10.0.3, whichever matches your release line, or a later version.
  4. CISA's required action: The impacted product is end-of-life and should be disconnected if still in use.
  5. Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
  6. Because the attack needs a user to take part, warn users about unexpected links and files related to this product until it is patched.

Affected products and versions

VendorProductAffected versionsFixed in
Adobeflash_playerbefore 10.2.154.2710.2.154.27
Adobeairbefore 2.6.191402.6.19140
Adobereader9.0 up to, but not including, 9.4.4; 10.0 up to, but not including, 10.0.39.4.4, 10.0.3
Adobeacrobat10.0 up to, but not including, 10.0.3; 9.0 up to, but not including, 9.4.410.0.3, 9.4.4
AdobeAcrobat Reader9.0 up to, but not including, 9.4.4; 10.0 through 10.0.1; 10.0 up to, but not including, 10.0.39.4.4, 10.0.3
AdobeAdobe Airbefore 2.6.191402.6.19140
GoogleChromebefore 10.0.648.20510.0.648.205
openSUSEOpensuse11.2; 11.3; 11.4Not stated
SUSELinux Enterprise Desktop10; 11Not 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
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
NoneNo account or login is needed.
User interaction
RequiredA user must take an action such as opening a file or link.
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:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. Scored by NVD.

Scoring systemScoreSeverityScored by
CVSS 3.18.8HighNVD
CVSS 3.18.8HighCISA (ADP)
CVSS 2.09.3HighNVD

Official description

Adobe Flash Player before 10.2.154.27 on Windows, Mac OS X, Linux, and Solaris and 10.2.156.12 and earlier on Android; Adobe AIR before 2.6.19140; and Authplay.dll (aka AuthPlayLib.bundle) in Adobe Reader 9.x before 9.4.4 and 10.x through 10.0.1 on Windows, Adobe Reader 9.x before 9.4.4 and 10.x before 10.0.3 on Mac OS X, and Adobe Acrobat 9.x before 9.4.4 and 10.x before 10.0.3 on Windows and Mac OS X allow remote attackers to execute arbitrary code or cause a denial of service (application crash) via crafted Flash content; as demonstrated by a Microsoft Office document with an embedded .swf file that has a size inconsistency in a "group of included constants," object type confusion, ActionScript that adds custom functions to prototypes, and Date objects; and as exploited in the wild in April 2011.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Access of Resource Using Incompatible Type

The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

More Access of Resource Using Incompatible Type vulnerabilities (CWE-843)

Timeline

  1. CVE record published.
  2. Added to CISA's Known Exploited Vulnerabilities catalogue.
  3. Deadline for US federal agencies to remediate, set by CISA.
  4. CISA published its SSVC assessment (exploitation: active, automatable: no, technical impact: total).
  5. Record last changed materially (score, affected products, status or references).

References

Technical write-ups (may include proof of concept)

Other vulnerabilities in flash_player

All flash_player vulnerabilities

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