VAR-201912-1597
Vulnerability from variot - Updated: 2023-12-18 13:37Samsung Galaxy S3/S4 exposes an unprotected component allowing an unprivileged app to send arbitrary SMS texts to arbitrary destinations without permission. Samsung Galaxy S3/S4 Contains an improper default permissions vulnerability.Information may be altered. The Samsung Galaxy S3 and S4 are prone to a local security-bypass vulnerability. An attacker with local physical access to a device can exploit this issue to bypass certain security restriction and perform unauthorized actions. Hi list, I would like to inform you that the details of the vulnerability in built-in system app of Samsung Galaxy S3/S4 (assigned as CVE-2013-4763 and CVE-2013-4764) are now disclosed to public. By exploiting these unprotected components, an unprivileged app can trigger a so-called \x93restore\x94 operation to write SMS messages back to the standard SMS database file (mmssms.db) used by the system messaging app, i.e., SecMms.apk. As a result, a smishing attack can effectively create and inject arbitrary (fake) SMS text messages. Similarly, fake MMS messages and call logs are also possible. This vulnerability has been disclosed in CVE-2013-4763.
Also, these components can be sequentially triggered in a specific order to create arbitrary SMS content, inject to system-wide SMS database, and then trigger the built-in SMS-sending behavior (to arbitrary destination). This vulnerability has been disclosed in CVE-2013-4764.
QIHU Inc. discovered these vulnerability and informed Samsung Corp. in June 10, 2013. Samsung confirmed the vulerability and is now preparing an OTA update. As a temporary workaround, disable the sCloudBackupProvider.apk app would help block known attack vectors.
Details of CVE-2013-4763 and CVE-2013-4764 can be also found in QIHU Inc.'s official site: http://shouji.360.cn/securityReportlist/CVE-2013-4763.html http://shouji.360.cn/securityReportlist/CVE-2013-4764.html
Regards, Z.X. from QIHU Inc
Show details on source website{
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Nomenclature
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- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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