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Vulnerability record · CVE-2011-1829 · published 27 July 2011

CVE-2011-1829: Debian advanced package tool improper input validation vulnerability

Debian · Advanced Package Tool

APT before 0.8.15.2 does not properly validate inline GPG signatures, which allows man-in-the-middle attackers to install modified packages via vectors involving lack of an initial clearsigned message.

4.3 CVSS 2.0 Medium EPSS 1.7% · top 23.9% CWE-20 · Improper input validation
4.3CVSS 2.0 base score
1.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
14References
16 Jun 2026Last modified by NVD

Description

APT before 0.8.15.2 does not properly validate inline GPG signatures, which allows man-in-the-middle attackers to install modified packages via vectors involving lack of an initial clearsigned message.

AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://launchpadlibrarian.net/75126628/apt_0.8.13.2ubuntu2_0.8.13.2ubuntu4.1.diff.gz PatchThird Party Advisory
http://packages.debian.org/changelogs/pool/main/a/apt/current/changelog Release NotesVendor Advisory
http://www.securityfocus.com/bid/48671 Third Party AdvisoryVDB Entry
http://www.ubuntu.com/usn/USN-1169-1 Third Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/68560 Third Party AdvisoryVDB Entry
https://launchpad.net/bugs/784473 Third Party Advisory
https://launchpad.net/ubuntu/+archive/primary/+sourcepub/1817196/+listing-archive-extra Patch
http://launchpadlibrarian.net/75126628/apt_0.8.13.2ubuntu2_0.8.13.2ubuntu4.1.diff.gz PatchThird Party Advisory
http://packages.debian.org/changelogs/pool/main/a/apt/current/changelog Release NotesVendor Advisory
http://www.securityfocus.com/bid/48671 Third Party AdvisoryVDB Entry
http://www.ubuntu.com/usn/USN-1169-1 Third Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/68560 Third Party AdvisoryVDB Entry
https://launchpad.net/bugs/784473 Third Party Advisory
https://launchpad.net/ubuntu/+archive/primary/+sourcepub/1817196/+listing-archive-extra Patch

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Source: NIST National Vulnerability Database (record CVE-2011-1829), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.