Ubuntu Security Notice 3964-1 - Marcus Brinkmann discovered that GnuPG before 2.2.8 improperly handled certain command line parameters. A remote attacker could use this to spoof the output of GnuPG and cause unsigned e-mail to appear signed. It was discovered that python-gnupg incorrectly handled the GPG passphrase. A remote attacker could send a specially crafted passphrase that would allow them to control the output of encryption and decryption operations. Various other issues were also addressed.
4032858588d1e2658d61e5efd5e46c841d62a00dde590953eebf108edf5c4102This archive contains proof of concepts and a whitepaper that describes multiple email client implementations where popular clients for email are vulnerable to signature spoofing attacks.
3356c7f94ef68ddc7268602c64a93e10fbaff874992374b51f89d7cf87f71a0cRed Hat Security Advisory 2018-2181-01 - The GNU Privacy Guard is a tool for encrypting data and creating digital signatures, compliant with OpenPGP and S/MIME standards. Issues addressed include a bypass vulnerability.
52028cf1f6db5944f1b973c2d1be9658dbc142764c48fc8560d6d3b5e94951daRed Hat Security Advisory 2018-2180-01 - The GNU Privacy Guard is a tool for encrypting data and creating digital signatures, compliant with OpenPGP and S/MIME standards. Issues addressed include a bypass vulnerability.
2f2fc656a581e7a0b0a806028dac8470629fd42649f68fd5af9f7580518b6aebSlackware Security Advisory - New gnupg packages are available for Slackware 13.0, 13.1, 13.37, 14.0, 14.1, 14.2, and -current to fix a security issue.
527978ed4a1118975c628678ef407d626092edebb007c69f960a688a6649e7afUbuntu Security Notice 3675-3 - USN-3675-1 fixed a vulnerability in GnuPG. This update provides the corresponding update for Ubuntu 12.04 ESM. Marcus Brinkmann discovered that during decryption or verification, GnuPG did not properly filter out terminal sequences when reporting the original filename. An attacker could use this to specially craft a file that would cause an application parsing GnuPG output to incorrectly interpret the status of the cryptographic operation reported by GnuPG. Various other issues were also addressed.
9587c69c7756e324145670c1fa02e480461438c991a57a910589e604dd2916beUbuntu Security Notice 3675-2 - USN-3675-1 fixed a vulnerability in GnuPG 2 for Ubuntu 18.04 LTS and Ubuntu 17.10. This update provides the corresponding update for GnuPG 2 in Ubuntu 16.04 LTS and Ubuntu 14.04 LTS. Marcus Brinkmann discovered that during decryption or verification, GnuPG did not properly filter out terminal sequences when reporting the original filename. An attacker could use this to specially craft a file that would cause an application parsing GnuPG output to incorrectly interpret the status of the cryptographic operation reported by GnuPG. Various other issues were also addressed.
0897462e75854fb4e6baef305d59332291756546f6848648d42df67f1e8ed263Ubuntu Security Notice 3675-1 - Marcus Brinkmann discovered that during decryption or verification, GnuPG did not properly filter out terminal sequences when reporting the original filename. An attacker could use this to specially craft a file that would cause an application parsing GnuPG output to incorrectly interpret the status of the cryptographic operation reported by GnuPG. Lance Vick discovered that GnuPG did not enforce configurations where key certification required an offline master Certify key. An attacker with access to a signing subkey could generate certifications that appeared to be valid. This issue only affected Ubuntu 18.04 LTS. Various other issues were also addressed.
3766e8329e34b63027e4f5cf9a8633afd662c34ab0ba403d391cd6bb6a60ae4bDebian Linux Security Advisory 4223-1 - Marcus Brinkmann discovered that GnuGPG performed insufficient sanitisation of file names displayed in status messages, which could be abused to fake the verification status of a signed email.
f6ea747cbddc7efc3cb94834162fc04efbb679102e473cbef039c62688a32712Debian Linux Security Advisory 4222-1 - Marcus Brinkmann discovered that GnuGPG performed insufficient sanitisation of file names displayed in status messages, which could be abused to fake the verification status of a signed email.
6a19749f3da79b8b886406716d726e163566861df974152823ddc17394f42d0bSlackware Security Advisory - New gnupg2 packages are available for Slackware 13.37, 14.0, 14.1, 14.2, and - -current to fix a security issue.
d310e76a0921a6cc2ee16f19d8f8b391df2cb4899707346d543830d25c927438Debian Linux Security Advisory 4224-1 - Marcus Brinkmann discovered that GnuGPG performed insufficient sanitisation of file names displayed in status messages, which could be abused to fake the verification status of a signed email.
48ffa2083ce23edda66107d7e98133264aff4c0af7aaa1febaa827798b766e31
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