CVE-2010-2221

CVE-2010-2221 is a medium-severity vulnerability in Zaal Tgt with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

• Severity: Medium (CVSS 2.0 base score 5.0)
• EPSS exploit prediction: 5% (92nd percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-119
• Affected product: Zaal Tgt
• Published: 2010-07-08
• Last modified: 2026-06-16

Description

Multiple buffer overflows in the iSNS implementation in isns.c in (1) Linux SCSI target framework (aka tgt or scsi-target-utils) before 1.0.6, (2) iSCSI Enterprise Target (aka iscsitarget or IET) 1.4.20.1 and earlier, and (3) Generic SCSI Target Subsystem for Linux (aka SCST or iscsi-scst) 1.0.1.1 and earlier allow remote attackers to cause a denial of service (memory corruption and daemon crash) or possibly execute arbitrary code via (a) a long iSCSI Name string in an SCN message or (b) an invalid PDU.

Frequently asked questions

What is CVE-2010-2221?

Multiple buffer overflows in the iSNS implementation in isns.c in (1) Linux SCSI target framework (aka tgt or scsi-target-utils) before 1.0.6, (2) iSCSI Enterprise Target (aka iscsitarget or IET) 1.4.20.1 and earlier, and (3) Generic SCSI Target Subsystem for Linux (aka SCST or iscsi-scst) 1.0.1.1 and earlier allow remote attackers to cause a denial of service (memory corruption and daemon crash) or possibly execute arbitrary code via (a) a long iSCSI Name string in an SCN message or (b) an invalid PDU.

How severe is CVE-2010-2221?

CVE-2010-2221 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2010-2221 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-2221?

CVE-2010-2221 primarily affects Zaal Tgt. In total, 58 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2010-2221?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2010-2221 published?

CVE-2010-2221 was published on 2010-07-08 and last updated on 2026-06-16.

References

• http://archives.neohapsis.com/archives/bugtraq/2010-07/0022.html
• http://archives.neohapsis.com/archives/fulldisclosure/2010-07/0058.html
• http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.html
• http://lists.wpkg.org/pipermail/stgt/2010-July/003858.html
• http://scst.svn.sourceforge.net/viewvc/scst/trunk/iscsi-scst/usr/isns.c?r1=1793&r2=1792&pathrev=1793
• http://scst.svn.sourceforge.net/viewvc/scst?view=revision&revision=1793
• http://secunia.com/advisories/40485
• http://secunia.com/advisories/40494
• http://secunia.com/advisories/40495
• http://sourceforge.net/mailarchive/forum.php?thread_name=E2BB8074E5500C42984D980D4BD78EF904075006%40MFG-NYC-EXCH2.mfg.prv&forum_name=iscsitarget-devel
• http://www.mandriva.com/security/advisories?name=MDVSA-2010:131
• http://www.osvdb.org/65990
• http://www.osvdb.org/65991
• http://www.osvdb.org/65992
• http://www.redhat.com/support/errata/RHSA-2010-0518.html
• http://www.securityfocus.com/bid/41327
• http://www.securitytracker.com/id?1024175
• http://www.vupen.com/english/advisories/2010/1760
• http://www.vupen.com/english/advisories/2010/1786
• https://bugzilla.redhat.com/show_bug.cgi?id=593877

Affected products (58)

• cpe:2.3:a:zaal:tgt:*:*:*:*:*:*:*:*
• cpe:2.3:a:zaal:tgt:0.9.5:*:*:*:*:*:*:*
• cpe:2.3:a:zaal:tgt:1.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:zaal:tgt:1.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:zaal:tgt:1.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:zaal:tgt:1.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:zaal:tgt:1.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:*:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.2.0:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.2.1:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.2.2:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.2.3:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.2.4:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.2.5:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.2.6:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.3.0:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.3.1:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.3.2:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.3.3:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.3.4:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.3.5:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.3.6:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.3.7:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.3.8:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.4.0:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.4.1:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.4.2:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.4.3:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.4.4:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.4.5:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.4.6:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.4.7:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.4.8:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.4.9:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.4.10:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.4.11:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.4.12:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.4.13:*:*:*:*:*:*:*
• cpe:2.3:a:arne_redlich_\&_ross_walker:iscsitarget:0.4.14:*:*:*:*:*:*:*

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• CVE-2010-0743 — Medium (CVSS 5.0): Multiple format string vulnerabilities in isns.c in (1) Linux SCSI target framework (aka tgt or scsi-target-utils)…

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