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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT Security Bulletin ASB-2018.0140 Mozilla Foundation Security Advisory 2018-17 27 June 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Mozilla Firefox ESR Operating System: UNIX variants (UNIX, Linux, OSX) Windows Mobile Device Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction Cross-site Request Forgery -- Remote with User Interaction Denial of Service -- Remote with User Interaction Access Confidential Data -- Remote with User Interaction Reduced Security -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2018-12368 CVE-2018-12366 CVE-2018-12365 CVE-2018-12364 CVE-2018-12363 CVE-2018-12362 CVE-2018-12360 CVE-2018-12359 CVE-2018-5188 CVE-2018-5156 Member content until: Friday, July 27 2018 Reference: ASB-2018.0138 ASB-2018.0139 OVERVIEW Multiple vulnerabilities have been identified in Mozilla Firefox ESR prior to version 52.9. [1] IMPACT The vendor has provided the following information about the vulnerabilities: "CVE-2018-12359: Buffer overflow using computed size of canvas element Reporter Nils Impact critical Description A buffer overflow can occur when rendering canvas content while adjusting the height and width of the <canvas> element dynamically, causing data to be written outside of the currently computed boundaries. This results in a potentially exploitable crash. References Bug 1459162 #CVE-2018-12360: Use-after-free when using focus() Reporter Nils Impact critical Description A use-after-free vulnerability can occur when deleting an input element during a mutation event handler triggered by focusing that element. This results in a potentially exploitable crash. References Bug 1459693 #CVE-2018-12362: Integer overflow in SSSE3 scaler Reporter F. Alonso (revskills) Impact high Description An integer overflow can occur during graphics operations done by the Supplemental Streaming SIMD Extensions 3 (SSSE3) scaler, resulting in a potentially exploitable crash. References Bug 1452375 #CVE-2018-5156: Media recorder segmentation fault when track type is changed during capture Reporter Nils Impact high Description A vulnerability can occur when capturing a media stream when the media source type is changed as the capture is occuring. This can result in stream data being cast to the wrong type causing a potentially exploitable crash. References Bug 1453127 #CVE-2018-12363: Use-after-free when appending DOM nodes Reporter Nils Impact high Description A use-after-free vulnerability can occur when script uses mutation events to move DOM nodes between documents, resulting in the old node that held the node being freed but the node still having a pointer referencing it. This results in a potentially exploitable crash. References Bug 1464784 #CVE-2018-12364: CSRF attacks through 307 redirects and NPAPI plugins Reporter David Black Impact high Description NPAPI plugins, such as Adobe Flash, can send non-simple cross-origin requests, bypassing CORS by making a same-origin POST that does a 307 redirect to the target site. This allows for a malicious site to engage in cross-site request forgery (CSRF) attacks. References Bug 1436241 #CVE-2018-12365: Compromised IPC child process can list local filenames Reporter Alex Gaynor Impact moderate Description A compromised IPC child process can escape the content sandbox and list the names of arbitrary files on the file system without user consent or interaction. This could result in exposure of private local files. References Bug 1459206 #CVE-2018-12366: Invalid data handling during QCMS transformations Reporter OSS-Fuzz Impact moderate Description An invalid grid size during QCMS (color profile) transformations can result in the out-of-bounds read interpreted as a float value. This could leak private data into the output. References Bug 1464039 #CVE-2018-12368: No warning when opening executable SettingContent-ms files Reporter Abdulrahman Alqabandi Impact moderate Description Windows 10 does not warn users before opening executable files with the SettingContent-ms extension even when they have been downloaded from the internet and have the "Mark of the Web." Without the warning, unsuspecting users unfamiliar with this new file type might run an unwanted executable. This also allows a WebExtension with the limited downloads.open permission to execute arbitrary code without user interaction on Windows 10 systems Note: this issue only affects Windows operating systems. Other operating systems are unaffected. References Bug 1468217 The Tale of SettingContent-ms Files #CVE-2018-5188: Memory safety bugs fixed in Firefox 60, Firefox ESR 60.1, and Firefox ESR 52.9 Reporter Mozilla developers and community Impact critical Description Mozilla developers and community members Alex Gaynor, Christoph Diehl, Christian Holler, Jason Kratzer, David Major, Jon Coppeard, Nicolas B. Pierron, Jason Kratzer, Marcia Knous, and Ronald Crane reported memory safety bugs present in Firefox 60, Firefox ESR 60, and Firefox ESR 52.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. References Memory safety bugs fixed in Firefox 61, Firefox ESR 60.1, and Firefox ESR 52.9" [1] MITIGATION Users are advised to update to Firefox ESR version 52.9 to address these issues. [1] REFERENCES [1] Mozilla Foundation Security Advisory 2018-17 https://www.mozilla.org/en-US/security/advisories/mfsa2018-17 AusCERT has made every effort to ensure that the information contained in this document is accurate. However, the decision to use the information described is the responsibility of each user or organisation. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBWzLSqmaOgq3Tt24GAQgnpBAAh9PinLgJSp/vKaJwtcxAw1tHmM+6X3wN 4+UY8ZEpB1dsgX03okuJJtfVQEJNB7/PnNWAcz41pDSDK2LJoQLZzxW/IY4H2Z4D p8AtTk/lxAZs/wEHNufK+N/eikMQL6XgTatnyFLi48Sno49saLt2Na3h1sb6SiHr TJ1UtxvECJ6UNSPPJC0Swtuy78eWH+9USTtZvIgSbWFGGRm+8xXJbJhQ0fCn2vXD 0Efj1pPM0LhCf0VFLq1mMHCiXQGuIpxN8I2wxl3xzDOAcjsTgUKz9RrW96jJ5IiC WY2SloWHezFzA22Q9BwkROvaI4LHg9x9tsAwLsUG7uCnmK5EZiMg9fNC4qsskueD 6GeGDBn9nWBAfpPIe8+p7ZlXpYSNFOEmnyVAD8C1xk0ZRXok8NuUBCe+kHdcQ+vn oOjRMc93wzN3aSZy3VF7BY3OuCdXA+Y1NOo4YVrROQQ0ECCsm7o0YOTWNNHtDCfF rN62R9s4xn9Xe/w8xS+EsDSKEeSmOkk9akw6FqS71/Zkxd3goNZtb4w6FcxgV5CF 0geQ5VYzTDK5uLSDuCt7TGbEkdOcXrF52/1kWYKaqQOyqb+RsvY0c8UOPrB5ox+3 46PbY8Lh3uCSAqZFv92QIn+/ZitbjSAsgKQWBiqdrB0mLdNYwXRk5p4jGVSvQkAm Q+sZ2xoJLuM= =b6CZ -----END PGP SIGNATURE-----