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CVE-2015-4456

ownCloud Desktop Client before 1.8.2 does not call QNetworkReply::ignoreSslErrors with the list...

2.6 LowFix available

ownCloud Desktop Client before 1.8.2 does not call QNetworkReply::ignoreSslErrors with the list of errors to be ignored, which allows man-in-the-middle attackers to bypass the user's certificate distrust decision and obtain sensitive information by leveraging a self-signed certificate and a connection to a server using its own self-signed certificate.

Exploit likelihood

0.83%Down 0.2 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 2.6

ownCloud Desktop Client before 1.8.2 does not call QNetworkReply::ignoreSslErrors with the list of errors to be ignored, which allows man-in-the-middle attackers to bypass the user's certificate distrust decision and obtain sensitive information by leveraging a self-signed certificate and a connection to a server using its own self-signed certificate.

Record
CVE-2015-4456
CVSS 2.0
2.6 LowAV:N/AC:H/Au:N/C:P/I:N/A:N
Updated
2026-11-02
CVE List No score

ownCloud Desktop Client before 1.8.2 does not call QNetworkReply::ignoreSslErrors with the list of errors to be ignored, which allows man-in-the-middle attackers to bypass the user's certificate distrust decision and obtain sensitive information by leveraging a self-signed certificate and a connection to a server using its own self-signed certificate.

Record
CVE-2015-4456
Updated
2026-11-02
EUVDEUVD-2015-4476 No score

ownCloud Desktop Client before 1.8.2 does not call QNetworkReply::ignoreSslErrors with the list of errors to be ignored, which allows man-in-the-middle attackers to bypass the user's certificate distrust decision and obtain sensitive information by leveraging a self-signed certificate and a connection to a server using its own self-signed certificate.

Record
EUVD-2015-4476
Updated
2026-11-03
GitHub AdvisoriesGHSA-p85q-834g-x9vx No score

ownCloud Desktop Client before 1.8.2 does not call QNetworkReply::ignoreSslErrors with the list...

ownCloud Desktop Client before 1.8.2 does not call QNetworkReply::ignoreSslErrors with the list of errors to be ignored, which allows man-in-the-middle attackers to bypass the user's certificate distrust decision and obtain sensitive information by leveraging a self-signed certificate and a connection to a server using its own self-signed certificate.

Record
GHSA-p85q-834g-x9vx
Updated
2026-11-02
OSV No score

ownCloud Desktop Client before 1.8.2 does not call QNetworkReply::ignoreSslErrors with the list of errors to be ignored, which allows man-in-the-middle attackers to bypass the user's certificate distrust decision and obtain sensitive information by leveraging a self-signed certificate and a connection to a server using its own self-signed certificate.

Record
CVE-2015-4456
Updated
2026-11-02
OSVDEBIAN-CVE-2015-4456 No score

ownCloud Desktop Client before 1.8.2 does not call QNetworkReply::ignoreSslErrors with the list of errors to be ignored, which allows man-in-the-middle attackers to bypass the user's certificate distrust decision and obtain sensitive information by leveraging a self-signed certificate and a connection to a server using its own self-signed certificate.

Record
DEBIAN-CVE-2015-4456
Updated
2026-11-02
OSVMGASA-2015-0256 No score

Updated owncloud-client package fixes security vulnerability

ownCloud Desktop Client before 1.8.2 was vulnerable against MITM attacks when used in combination with self-signed certificates (CVE-2015-4456).

The owncloud-client package has been updated to version 1.8.3, which fixes this issue as well as several other bugs

Record
MGASA-2015-0256
Updated
2026-11-02
OSVUBUNTU-CVE-2015-4456 No score

ownCloud Desktop Client before 1.8.2 does not call QNetworkReply::ignoreSslErrors with the list of errors to be ignored, which allows man-in-the-middle attackers to bypass the user's certificate distrust decision and obtain sensitive information by leveraging a self-signed certificate and a connection to a server using its own self-signed certificate.

Record
UBUNTU-CVE-2015-4456
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
owncloud-client
Debian:12
before 1.8.4+dfsg-1
1.8.4+dfsg-1
owncloud-client
Debian:13
before 1.8.4+dfsg-1
1.8.4+dfsg-1
owncloud-client
Debian:8
before 1.7.0~beta1+really1.6.4+dfsg-1+deb8u1, plus listed versions
1.7.0~beta1+really1.6.4+dfsg-1
1.7.0~beta1+really1.6.4+dfsg-1+deb8u1
owncloud-client
Mageia:4
before 1.8.3-1.mga4
1.8.3-1.mga4
owncloud-client
Mageia:5
before 1.8.3-1.mga5
1.8.3-1.mga5

History

History
RecordedChangedSources
affected
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2015-4456 is a low vulnerability (CVSS 2.6) in Owncloud Desktop Client, published July 5, 2015. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.83%, the 57th percentile. Fixed in owncloud-client 1.8.4+dfsg-1.

References

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