HIGH
python: integer signedness error in the zlib extension module
Published Apr 10, 2008
7.5
HIGHCVSS 2.0
EPSS 22.62%
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.
Affected products
No data.
Configuration 1
Configuration 2
- 4.0
Configuration 3
OR
- 6.06
- 7.04
- 7.10
- 8.04
No data.
Red Hat Enterprise Linux 4
python-0:2.3.4-14.7.el4_8.2
Fixed · RHSA-2009:1177
Red Hat Enterprise Linux 5
python-0:2.4.3-24.el5_3.6
Fixed · RHSA-2009:1176
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | python-0:2.3.4-14.7.el4_8.2 | Fixed | RHSA-2009:1177 |
| Red Hat Enterprise Linux 5 | python-0:2.4.3-24.el5_3.6 | Fixed | RHSA-2009:1176 |
No package ranges for this CVE.
Remediation
Red Hat statement
Red Hat is aware of this issue and is tracking it via the following bug: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=442005 The Red Hat Product Security has rated this issue as having low security impact, a future update may address this flaw. More information regarding issue severity can be found here: https://access.redhat.com/security/updates/classification/
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
7.5 HIGH NVD
AV:N/AC:L/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
22.62% 0.22621
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
EPSS probability 0.22621
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (19 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 22.62% (0.22621) | 97.66th | v5 (v2026.06.15) |
| Jun 15, 2026 | 22.62% (0.22621) | 97.42th | v5 (v2026.06.15) |
| Jun 7, 2026 | 22.81% (0.22811) | 95.99th | v4 (v2025.03.14) |
| May 6, 2026 | 28.41% (0.28409) | 96.54th | v4 (v2025.03.14) |
| Dec 28, 2025 | 31.08% (0.31083) | 96.57th | v4 (v2025.03.14) |
| Dec 27, 2025 | 34.75% (0.34748) | 96.89th | v4 (v2025.03.14) |
| Oct 28, 2025 | 31.08% (0.31083) | 96.51th | v4 (v2025.03.14) |
| Oct 27, 2025 | 34.75% (0.34748) | 96.83th | v4 (v2025.03.14) |
| Oct 1, 2025 | 31.08% (0.31083) | 96.61th | v4 (v2025.03.14) |
| Jul 6, 2025 | 35.16% (0.35164) | 96.84th | v4 (v2025.03.14) |
| Apr 30, 2025 | 18.66% (0.18659) | 94.88th | v4 (v2025.03.14) |
| Mar 30, 2025 | 23.43% (0.23425) | 95.49th | v4 (v2025.03.14) |
| Mar 29, 2025 | 28.89% (0.28889) | 94.55th | v4 (v2025.03.14) |
| Mar 17, 2025 | 23.43% (0.23425) | 95.51th | v4 (v2025.03.14) |
| Dec 17, 2024 | 33.63% (0.33627) | 97.08th | v3 (v2023.03.01) |
| Dec 12, 2024 | 9.88% (0.09881) | 95.11th | v3 (v2023.03.01) |
| Mar 7, 2023 | 10.08% (0.10081) | 93.94th | v3 (v2023.03.01) |
| Mar 6, 2023 | 47.94% (0.47944) | 98.60th | v2 (v2022.01.01) |
| Feb 4, 2022 | 47.94% (0.47944) | 98.10th | v2 (v2022.01.01) |
Weaknesses (1)
References (37)
- http://bugs.python.org/issue2586 x_refsource_CONFIRMIssue TrackingVendor Advisory
- http://lists.apple.com/archives/security-announce/2009/Feb/msg00000.html vendor-advisoryx_refsource_APPLEMailing ListThird Party Advisory
- http://secunia.com/advisories/29889 third-party-advisoryx_refsource_SECUNIANot Applicable
- http://secunia.com/advisories/29955 third-party-advisoryx_refsource_SECUNIANot Applicable
- http://secunia.com/advisories/30872 third-party-advisoryx_refsource_SECUNIANot Applicable
- http://secunia.com/advisories/31255 third-party-advisoryx_refsource_SECUNIANot Applicable
- http://secunia.com/advisories/31358 third-party-advisoryx_refsource_SECUNIANot Applicable
- http://secunia.com/advisories/31365 third-party-advisoryx_refsource_SECUNIANot Applicable
- http://secunia.com/advisories/33937 third-party-advisoryx_refsource_SECUNIANot Applicable
- http://secunia.com/advisories/37471 third-party-advisoryx_refsource_SECUNIANot Applicable
- http://secunia.com/advisories/38675 third-party-advisoryx_refsource_SECUNIANot Applicable
- http://security.gentoo.org/glsa/glsa-200807-01.xml vendor-advisoryx_refsource_GENTOOThird Party Advisory
- http://securityreason.com/securityalert/3802 third-party-advisoryx_refsource_SREASONExploitThird Party Advisory
- http://slackware.com/security/viewer.php?l=slackware-security&y=2008&m=slackware-security.525289 vendor-advisoryx_refsource_SLACKWAREThird Party Advisory
- http://support.apple.com/kb/HT3438 x_refsource_CONFIRMThird Party Advisory
- http://support.avaya.com/css/P8/documents/100074697 x_refsource_CONFIRMThird Party Advisory
- http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0149 x_refsource_CONFIRMBroken Link
- http://www.debian.org/security/2008/dsa-1551 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.debian.org/security/2008/dsa-1620 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:085 vendor-advisoryx_refsource_MANDRIVAPermissions Required
- http://www.securityfocus.com/archive/1/490690/100/0/threaded mailing-listx_refsource_BUGTRAQThird Party AdvisoryVDB Entry
- http://www.securityfocus.com/archive/1/507985/100/0/threaded mailing-listx_refsource_BUGTRAQThird Party AdvisoryVDB Entry
- http://www.securityfocus.com/bid/28715 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id?1019823 vdb-entryx_refsource_SECTRACKBroken LinkThird Party AdvisoryVDB Entry
- http://www.ubuntu.com/usn/usn-632-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- http://www.vmware.com/security/advisories/VMSA-2009-0016.html x_refsource_CONFIRMThird Party Advisory
- http://www.vupen.com/english/advisories/2008/1229/references vdb-entryx_refsource_VUPENPermissions Required
- http://www.vupen.com/english/advisories/2009/3316 vdb-entryx_refsource_VUPENPermissions Required
- https://access.redhat.com/security/cve/CVE-2008-1721 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=442005 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/41748 vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry
- https://issues.rpath.com/browse/RPL-2444 x_refsource_CONFIRMBroken Link
- https://nvd.nist.gov/vuln/detail/CVE-2008-1721
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8249 vdb-entrysignaturex_refsource_OVALThird Party Advisory
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8494 vdb-entrysignaturex_refsource_OVALBroken Link
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9407 vdb-entrysignaturex_refsource_OVALThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2008-1721
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Apr 10, 2008
Updated Aug 7, 2024
Reserved Apr 10, 2008
Link CVE-2008-1721
CISA Vulnrichment
Updated n/a