CVE-2008-1721: canonical ubuntu_linux

Modified

Published 10-04-2008Last modified 07-08-2024

Vulnerability summary

CVE-2008-1721 is a high (CVSS 7.5) vulnerability in canonical ubuntu_linux. EPSS estimates a 22.62% chance of exploitation in the next 30 days, higher than 97.7% of scored vulnerabilities. 2 public exploits are recorded.

Priority

Prioritiseweaponized exploit

Weaponized exploit (exploit-database, 09-04-2008)

Source freshness unavailable

How is this decided?

CVSS score

7.5/10

010

High · v2.0 (NVD)

EPSS score

22.62%

0%100%

High · 0.00 pp in 30 days

KEVNot listedNot listed by any tracked catalog.

RansomwareNot flaggedNo ransomware use recorded.

Public exploits2reference, exploit-database

Advisory lineage

Upstream 0 · Downstream 6 · Related 2

DSA-1551-1 DSA-1620-1 OPENSUSE-SU-2024:11202-1 RHSA-2009:1176 RHSA-2009:1177 SUSE-SU-2020:0234-1

Timeline

10-04-2008
PublishedVulnerability first disclosed.
07-08-2024
Last modifiedVulnerability information updated.

Description

Integer signedness error in the zlib extension module in Python 2.5.2 and earlier allows remote attackers to execute arbitrary code via a negative signed integer, which triggers insufficient memory allocation and a buffer overflow.

CVSS metrics

1 score · 1 source · 1 version

v2.07.5

EPSS trend

Probability

22.62%

Chance of exploitation in the next 30 days

Percentile

98%

Versus all other CVEs

30-day change

No change 0.00 pp

From 22.62% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs

CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

2 found

referenceUnverified
Exploit Reference (securityreason.com)
Maturity: unknown
exploit-databaseremoteunixVerified
Python zlib Module - Remote Buffer Overflow
Maturity: weaponized

Weaknesses

CWE · root cause

CWE-681Incorrect Conversion between Numeric TypesWhen converting from one data type to another, such as long to integer, data can be omitted or translated in a way that produces unexpected values. If the resulting values are used in a sensitive context, then dangerous behaviors may occur.

Affected systems

Version check

Known conditions: network-reachable, no authentication (CVSS vector). Other conditions: not stated in public data.

Canonical1 product

ubuntu_linuxEOL6.06 | 7.04 | 7.10 | 8.04

Debian1 product

debian_linuxEOL4.0

Python1 product

python≥ 2.4.0, < 2.4.6 | ≥ 2.5.0, ≤ 2.5.2

3 vendors · 3 products

References

33 links

security.gentoo.org/glsa/glsa-200807-01.xmlVendor AdvisoryX Refsource GENTOOThird Party Advisory
www.vupen.com/english/advisories/2008/1229/referencesVDB EntryX Refsource VUPENPermissions Required
secunia.com/advisories/30872Third Party AdvisoryX Refsource SECUNIANot Applicable
www.securityfocus.com/bid/28715VDB EntryX Refsource BIDThird Party Advisory
secunia.com/advisories/38675Third Party AdvisoryX Refsource SECUNIANot Applicable
secunia.com/advisories/33937Third Party AdvisoryX Refsource SECUNIANot Applicable
www.mandriva.com/security/advisories?name=MDVSA-2008:085Vendor AdvisoryX Refsource MANDRIVAPermissions Required
secunia.com/advisories/37471Third Party AdvisoryX Refsource SECUNIANot Applicable
secunia.com/advisories/29955Third Party AdvisoryX Refsource SECUNIANot Applicable
www.debian.org/security/2008/dsa-1551Vendor AdvisoryX Refsource DEBIANThird Party Advisory

Show all 33 references

www.vmware.com/security/advisories/VMSA-2009-0016.htmlX Refsource CONFIRMThird Party Advisory
support.apple.com/kb/HT3438X Refsource CONFIRMThird Party Advisory
lists.apple.com/archives/security-announce/2009/Feb/msg00000.htmlVendor AdvisoryX Refsource APPLEMailing ListThird Party Advisory
secunia.com/advisories/31358Third Party AdvisoryX Refsource SECUNIANot Applicable
exchange.xforce.ibmcloud.com/vulnerabilities/41748VDB EntryX Refsource XFThird Party Advisory
www.ubuntu.com/usn/usn-632-1Vendor AdvisoryX Refsource UBUNTUThird Party Advisory
www.securitytracker.com/id?1019823VDB EntryX Refsource SECTRACKBroken LinkThird Party Advisory
bugs.python.org/issue2586X Refsource CONFIRMIssue TrackingVendor Advisory
issues.rpath.com/browse/RPL-2444X Refsource CONFIRMBroken Link
www.securityfocus.com/archive/1/507985/100/0/threadedMailing ListX Refsource BUGTRAQThird Party AdvisoryVDB Entry
securityreason.com/securityalert/3802Third Party AdvisoryX Refsource SREASONExploit
secunia.com/advisories/31365Third Party AdvisoryX Refsource SECUNIANot Applicable
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8249VDB EntrySignatureX Refsource OVALThird Party Advisory
support.avaya.com/css/P8/documents/100074697X Refsource CONFIRMThird Party Advisory
secunia.com/advisories/31255Third Party AdvisoryX Refsource SECUNIANot Applicable
www.securityfocus.com/archive/1/490690/100/0/threadedMailing ListX Refsource BUGTRAQThird Party AdvisoryVDB Entry
www.debian.org/security/2008/dsa-1620Vendor AdvisoryX Refsource DEBIANThird Party Advisory
wiki.rpath.com/wiki/Advisories:rPSA-2008-0149X Refsource CONFIRMBroken Link
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9407VDB EntrySignatureX Refsource OVALThird Party Advisory
slackware.com/security/viewer.php?l=slackware-security&y=2008&m=slackware-security.525289Vendor AdvisoryX Refsource SLACKWAREThird Party Advisory
www.vupen.com/english/advisories/2009/3316VDB EntryX Refsource VUPENPermissions Required
secunia.com/advisories/29889Third Party AdvisoryX Refsource SECUNIANot Applicable
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8494VDB EntrySignatureX Refsource OVALBroken Link