CVE-2002-0315: fasttrack p2p, as used in (1) KaZaA, (2) grokster, and (3) morpheus allows remote attackers to spoof other use

This month

HIGH 7.5DOWNGRADEDOWNGRADEDOWNGRADE

CVE-2002-0315 is a high-severity flaw (CVSS 7.5) affecting kazaa, grokster, morpheus. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

fasttrack p2p, as used in (1) KaZaA, (2) grokster, and (3) morpheus allows remote attackers to spoof other users by modifying the username and network information in the message header.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	1.8% (top 22%)
CISA exploited list	No
Published	2002-06-25
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: fasttrack · grokster · music city networks

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2002-06-25 04:00 UTCPublished CVE record published
2026-06-16 21:57 UTCUpdated Record last modified

fasttrack kazaa DOWNGRADE

Affected: 1.2 · 1.3 · 1.3.3 · 1.4 · 1.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2

1. Check installed version

apt-cache policy kazaa || rpm -q kazaa || kazaa --version

2. No fixed release: DOWNGRADE to a release before 1.2 (Debian / Ubuntu)

apt-cache madison kazaa sudo apt install kazaa=<VERSION_BEFORE_1.2> sudo apt-mark hold kazaa

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list kazaa sudo dnf downgrade kazaa-<VERSION_BEFORE_1.2> sudo dnf versionlock add kazaa

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

grokster grokster DOWNGRADE

Affected: 1.3 · 1.3.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.3

1. Check installed version

apt-cache policy grokster || rpm -q grokster || grokster --version

2. No fixed release: DOWNGRADE to a release before 1.3 (Debian / Ubuntu)

apt-cache madison grokster sudo apt install grokster=<VERSION_BEFORE_1.3> sudo apt-mark hold grokster

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list grokster sudo dnf downgrade grokster-<VERSION_BEFORE_1.3> sudo dnf versionlock add grokster

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

music city networks morpheus DOWNGRADE

Affected: 1.3 · 1.3.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.3

1. Check installed version

apt-cache policy morpheus || rpm -q morpheus || morpheus --version

2. No fixed release: DOWNGRADE to a release before 1.3 (Debian / Ubuntu)

apt-cache madison morpheus sudo apt install morpheus=<VERSION_BEFORE_1.3> sudo apt-mark hold morpheus

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list morpheus sudo dnf downgrade morpheus-<VERSION_BEFORE_1.3> sudo dnf versionlock add morpheus

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2002-0315?

kazaa: downgrade or apply the listed mitigation; grokster: downgrade or apply the listed mitigation; morpheus: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2002-0315 being exploited?

CVE-2002-0315 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2002-0315 affect?

CVE-2002-0315 affects kazaa, grokster, morpheus. Severity is high (CVSS 7.5). fasttrack p2p, as used in (1) KaZaA, (2) grokster, and (3) morpheus allows remote attackers to spoof other users by modifying the username and network information in the message header.

How urgent is CVE-2002-0315?

Priority 51/100. High severity; Public exploit reference

Related CVEs

CVE-2003-0397 HIGH 7.5 DOWNGRADE Buffer overflow in FastTrack (FT) network code, as used in Kazaa 2.0.2 and possibly other versions and product
CVE-2002-0314 MEDIUM 5.0 DOWNGRADE DOWNGRADE fasttrack p2p, as used in (1) KaZaA before 1.5, (2) grokster, and (3) morpheus allows remote attackers to caus

References

← Back to latest CVEs