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10.0
HIGH CVSS 2.0
CVE-2010-2521
Linux NFS Server XDR Buffer Overflow
Description

Multiple buffer overflows in fs/nfsd/nfs4xdr.c in the XDR implementation in the NFS server in the Linux kernel before 2.6.34-rc6 allow remote attackers to cause a denial of service (panic) or possibly execute arbitrary code via a crafted NFSv4 compound WRITE request, related to the read_buf and nfsd4_decode_compound functions.

INFO

Published Date :

Sept. 7, 2010, 5 p.m.

Last Modified :

April 11, 2025, 12:51 a.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2010-2521 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 HIGH [email protected]
Solution
A buffer overflow vulnerability exists in the Linux kernel NFS server, which could allow for a denial of service or potentially the execution of arbitrary code; updating the kernel and related packages addresses this issue.
  • Update the affected kernel packages.
  • Update the affected packages.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2010-2521.

URL Resource
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=2bc3c1179c781b359d4f2f3439cb3df72afc17fc
http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00004.html
http://secunia.com/advisories/43315
http://securitytracker.com/id?1024286
http://www.debian.org/security/2010/dsa-2094
http://www.kernel.org/pub/linux/kernel/v2.6/testing/v2.6.34/ChangeLog-2.6.34-rc6
http://www.mandriva.com/security/advisories?name=MDVSA-2010:198
http://www.mandriva.com/security/advisories?name=MDVSA-2011:051
http://www.openwall.com/lists/oss-security/2010/07/07/1
http://www.openwall.com/lists/oss-security/2010/07/09/2
http://www.redhat.com/support/errata/RHSA-2010-0610.html
http://www.redhat.com/support/errata/RHSA-2010-0893.html
http://www.redhat.com/support/errata/RHSA-2010-0907.html
http://www.securityfocus.com/archive/1/516397/100/0/threaded
http://www.securityfocus.com/bid/42249
http://www.ubuntu.com/usn/USN-1000-1
http://www.vmware.com/security/advisories/VMSA-2011-0003.html
http://www.vupen.com/english/advisories/2010/3050
https://bugzilla.redhat.com/show_bug.cgi?id=612028
https://rhn.redhat.com/errata/RHSA-2010-0606.html
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=2bc3c1179c781b359d4f2f3439cb3df72afc17fc
http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00004.html
http://secunia.com/advisories/43315
http://securitytracker.com/id?1024286
http://www.debian.org/security/2010/dsa-2094
http://www.kernel.org/pub/linux/kernel/v2.6/testing/v2.6.34/ChangeLog-2.6.34-rc6
http://www.mandriva.com/security/advisories?name=MDVSA-2010:198
http://www.mandriva.com/security/advisories?name=MDVSA-2011:051
http://www.openwall.com/lists/oss-security/2010/07/07/1
http://www.openwall.com/lists/oss-security/2010/07/09/2
http://www.redhat.com/support/errata/RHSA-2010-0610.html
http://www.redhat.com/support/errata/RHSA-2010-0893.html
http://www.redhat.com/support/errata/RHSA-2010-0907.html
http://www.securityfocus.com/archive/1/516397/100/0/threaded
http://www.securityfocus.com/bid/42249
http://www.ubuntu.com/usn/USN-1000-1
http://www.vmware.com/security/advisories/VMSA-2011-0003.html
http://www.vupen.com/english/advisories/2010/3050
https://bugzilla.redhat.com/show_bug.cgi?id=612028
https://rhn.redhat.com/errata/RHSA-2010-0606.html
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2010-2521 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2010-2521 weaknesses.

CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-42: MIME Conversion MIME Conversion CAPEC-44: Overflow Binary Resource File Overflow Binary Resource File CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-100: Overflow Buffers Overflow Buffers CAPEC-123: Buffer Manipulation Buffer Manipulation

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2010-2521 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2010-2521 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=2bc3c1179c781b359d4f2f3439cb3df72afc17fc
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00004.html
    Added Reference http://secunia.com/advisories/43315
    Added Reference http://securitytracker.com/id?1024286
    Added Reference http://www.debian.org/security/2010/dsa-2094
    Added Reference http://www.kernel.org/pub/linux/kernel/v2.6/testing/v2.6.34/ChangeLog-2.6.34-rc6
    Added Reference http://www.mandriva.com/security/advisories?name=MDVSA-2010:198
    Added Reference http://www.mandriva.com/security/advisories?name=MDVSA-2011:051
    Added Reference http://www.openwall.com/lists/oss-security/2010/07/07/1
    Added Reference http://www.openwall.com/lists/oss-security/2010/07/09/2
    Added Reference http://www.redhat.com/support/errata/RHSA-2010-0610.html
    Added Reference http://www.redhat.com/support/errata/RHSA-2010-0893.html
    Added Reference http://www.redhat.com/support/errata/RHSA-2010-0907.html
    Added Reference http://www.securityfocus.com/archive/1/516397/100/0/threaded
    Added Reference http://www.securityfocus.com/bid/42249
    Added Reference http://www.ubuntu.com/usn/USN-1000-1
    Added Reference http://www.vmware.com/security/advisories/VMSA-2011-0003.html
    Added Reference http://www.vupen.com/english/advisories/2010/3050
    Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=612028
    Added Reference https://rhn.redhat.com/errata/RHSA-2010-0606.html
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Feb. 13, 2023

    Action Type Old Value New Value
    Changed Description CVE-2010-2521 kernel: nfsd4: bug in read_buf Multiple buffer overflows in fs/nfsd/nfs4xdr.c in the XDR implementation in the NFS server in the Linux kernel before 2.6.34-rc6 allow remote attackers to cause a denial of service (panic) or possibly execute arbitrary code via a crafted NFSv4 compound WRITE request, related to the read_buf and nfsd4_decode_compound functions.
    Removed CVSS V2 Red Hat, Inc. (AV:A/AC:L/Au:N/C:C/I:C/A:C)
    Removed Reference https://access.redhat.com/errata/RHSA-2010:0606 [No Types Assigned]
    Removed Reference https://access.redhat.com/errata/RHSA-2010:0610 [No Types Assigned]
    Removed Reference https://access.redhat.com/errata/RHSA-2010:0631 [No Types Assigned]
    Removed Reference https://access.redhat.com/errata/RHSA-2010:0893 [No Types Assigned]
    Removed Reference https://access.redhat.com/errata/RHSA-2010:0907 [No Types Assigned]
    Removed Reference https://access.redhat.com/security/cve/CVE-2010-2521 [No Types Assigned]
  • CVE Modified by [email protected]

    Feb. 02, 2023

    Action Type Old Value New Value
    Changed Description Multiple buffer overflows in fs/nfsd/nfs4xdr.c in the XDR implementation in the NFS server in the Linux kernel before 2.6.34-rc6 allow remote attackers to cause a denial of service (panic) or possibly execute arbitrary code via a crafted NFSv4 compound WRITE request, related to the read_buf and nfsd4_decode_compound functions. CVE-2010-2521 kernel: nfsd4: bug in read_buf
    Added CVSS V2 Red Hat, Inc. (AV:A/AC:L/Au:N/C:C/I:C/A:C)
    Removed Reference http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=2bc3c1179c781b359d4f2f3439cb3df72afc17fc [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2010:0610 [No Types Assigned]
    Added Reference https://access.redhat.com/security/cve/CVE-2010-2521 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2010:0631 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2010:0893 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2010:0907 [No Types Assigned]
    Added Reference http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=2bc3c1179c781b359d4f2f3439cb3df72afc17fc [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2010:0606 [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 10, 2018

    Action Type Old Value New Value
    Removed Reference http://www.securityfocus.com/archive/1/archive/1/516397/100/0/threaded [No Types Assigned]
    Added Reference http://www.securityfocus.com/archive/1/516397/100/0/threaded [No Types Assigned]
  • Initial Analysis by [email protected]

    Sep. 08, 2010

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 10
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

2.49 }} -0.03%

score

0.84524

percentile