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CVE Record

CVE-2011-3152: DistUpgrade/DistUpgradeFetcherCore.py in Update Manager before 1:0.87.31.1, 1:0.134.x before 1:0.134.11.1,...

DistUpgrade/DistUpgradeFetcherCore.py in Update Manager before 1:0.87.31.1, 1:0.134.x before 1:0.134.11.1, 1:0.142.x before 1:0.142.23.1, 1:0.150.x before 1:0.150.5.1, and 1:0.152.x before 1:0.152.25.5 on Ubuntu 8.04 through 11.10 does not verify the GPG signature before extracting an upgrade tarball, which allows man-in-the-middle attackers to (1) create or overwrite arbitrary files via a directory traversal attack using a crafted tar file, or (2) bypass authentication via a crafted meta-release file.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

Ubuntu Update Manager could unpack a release-upgrade archive before verifying its GPG signature. A network attacker positioned between the system and update source could tamper with upgrade metadata or the tarball, potentially causing file overwrite or authentication bypass during an upgrade. This mainly matters for legacy Ubuntu 8.04 through 11.10 systems still present in an environment. Exposure is likely limited to systems running Ubuntu 8.04 through 11.10 with vulnerable Update Manager package versions. Modern supported Ubuntu releases are not identified as affected in the provided source bundle. Residual risk is most likely in unmanaged legacy hosts, archived images, lab systems, or appliances based on those releases. Prioritize finding and retiring legacy affected Ubuntu systems rather than treating this as a broad modern Ubuntu emergency. If such systems remain in production, handle urgently because compromise could occur during upgrade retrieval without relying on local credentials. Mitigation focus: Update Update Manager to the fixed Ubuntu package version for the installed release.; Use Ubuntu USN-1284-1 as the authoritative remediation reference.; Retire or isolate Ubuntu 8.04 through 11.10 systems where updates are unavailable..

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors
0Timeline events
0ADP providers
3Source links

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Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
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Weakness

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