Adobe Reader Buffer Overflow
CVE-2013-0641 is a high-severity buffer copy without checking size of input vulnerability in Acrobat from Adobe, with a CVSS 3.1 base score of 7.8 out of 10. It can be exploited with local access to the system by an unauthenticated attacker, but only if a user takes part, for example by opening a link or file. The record lists versions 9.5.4, 10.1.6, 11.0.02 as the first without the flaw, so updating Acrobat to one of those releases 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.
Attackers are already exploiting this vulnerability, according to CISA.
What to do
- Update Acrobat to 9.5.4 or 10.1.6 or 11.0.02, whichever matches your release line, or a later version.
- Update Acrobat Reader to 10.1.6 or 11.0.02 or 9.5.4, whichever matches your release line, or a later version.
- CISA's required action: Apply updates per vendor instructions.
- Read the advisory on adobe.com for workarounds and exact fixed builds.
- 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
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Adobe | Acrobat | 9.0 up to, but not including, 9.5.4; 10.0 up to, but not including, 10.1.6; 11.0 up to, but not including, 11.0.02 | 9.5.4, 10.1.6, 11.0.02 |
| Adobe | Acrobat Reader | 10.0 up to, but not including, 10.1.6; 11.0 up to, but not including, 11.0.02; 9.0 up to, but not including, 9.5.4 | 10.1.6, 11.0.02, 9.5.4 |
| Red Hat | Enterprise Linux Desktop | 6.0 | Not stated |
| Red Hat | Enterprise Linux EUS | 5.9; 6.4 | Not stated |
| Red Hat | Enterprise Linux Server | 6.0 | Not stated |
| Red Hat | Enterprise Linux Server AUS | 5.9; 6.4 | Not stated |
| Red Hat | Enterprise Linux Workstation | 6.0 | Not stated |
| openSUSE | Opensuse | 11.4; 12.1 | Not stated |
| SUSE | Linux Enterprise Desktop | 10; 11 | Not stated |
Version data comes from NVD's product matching. 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
- 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:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.8 | High | NVD |
| CVSS 3.1 | 7.8 | High | CISA (ADP) |
| CVSS 2.0 | 9.3 | High | NVD |
Official description
Buffer overflow in Adobe Reader and Acrobat 9.x before 9.5.4, 10.x before 10.1.6, and 11.x before 11.0.02 allows remote attackers to execute arbitrary code via a crafted PDF document, as exploited in the wild in February 2013.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Buffer Copy without Checking Size of Input
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.
How developers prevent this class of flaw
- Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. For example, many languages that perform their own memory management, such as Java and Perl, are not subject to buffer overflows. Other languages, such as Ada and C#, typically provide overflow protection, but the protection can be disabled by the programmer. Be wary that a language's interface to native code may still be subject to overflows, even if the language itself is theoretically safe.
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. Examples include the Safe C String Library (SafeStr) by Messier and Viega, and the Strsafe.h library from Microsoft. These libraries provide safer versions of overflow-prone string-handling functions.
- Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking. D3-SFCV (Stack Frame Canary Validation) from D3FEND discusses canary-based detection in detail.
More Buffer Copy without Checking Size of Input vulnerabilities (CWE-120)
Timeline
- CVE record published.
- Added to CISA's Known Exploited Vulnerabilities catalogue.
- Deadline for US federal agencies to remediate, set by CISA.
- CISA published its SSVC assessment (exploitation: active, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- lists.opensuse.org/opensuse-security-announce/2013-02/msg00021.htmlMailing List, Third Party Advisory
- lists.opensuse.org/opensuse-security-announce/2013-02/msg00023.htmlMailing List, Third Party Advisory
- lists.opensuse.org/opensuse-security-announce/2013-02/msg00024.htmlMailing List, Third Party Advisory
- rhn.redhat.com/errata/RHSA-2013-0551.htmlThird Party Advisory
- security.gentoo.org/glsa/glsa-201308-03.xmlThird Party Advisory
- kb.cert.org/vuls/id/422807Third Party Advisory, US Government Resource
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2013-0641US Government Resource
Other vulnerabilities in Acrobat
- 8.8 High severity
- 7.8 High severity
- 7.8 High severity
- 7.8 High severity
- 7.8 High severity
- 7.8 High severity
Recent Buffer Copy without Checking Size of Input vulnerabilities
- 7.8 High severity
Microsoft PowerPoint Buffer Overflow Exploited
- 7.8 High severity
Adobe Acrobat and Reader Buffer Overflow Exploited
- 8.8 High severity
Microsoft Word Malformed Object Pointer Exploited
- 7.8 High severity
Microsoft Windows Privilege Escalation Exploited
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