socket.c in GNU Screen through 4.9.0, when installed setuid or setgid (the default on platforms such as Arch Linux and FreeBSD), allows local users to send a privileged SIGHUP signal to any PID, causing a denial of service or disruption of the target process.
CVSS Score
6.5
EPSS Score
0.0
Published
2023-04-08
encoding.c in GNU Screen through 4.8.0 allows remote attackers to cause a denial of service (invalid write access and application crash) or possibly have unspecified other impact via a crafted UTF-8 character sequence.
CVSS Score
9.8
EPSS Score
0.013
Published
2021-02-09
A buffer overflow was found in the way GNU Screen before 4.8.0 treated the special escape OSC 49. Specially crafted output, or a special program, could corrupt memory and crash Screen or possibly have unspecified other impact.
CVSS Score
9.8
EPSS Score
0.007
Published
2020-02-24
GNU screen before 4.5.1 allows local users to modify arbitrary files and consequently gain root privileges by leveraging improper checking of logfile permissions.
CVSS Score
7.8
EPSS Score
0.013
Published
2017-03-20
GNU screen 4.0.3 creates the /tmp/screen-exchange temporary file with world-readable permissions, which might allow local users to obtain sensitive session information.
CVSS Score
4.9
EPSS Score
0.001
Published
2009-04-01
GNU screen 4.0.3 allows local users to unlock the screen via a CTRL-C sequence at the password prompt. NOTE: multiple third parties report inability to reproduce this issue
CVSS Score
7.2
EPSS Score
0.001
Published
2007-06-05
Multiple unspecified vulnerabilities in the "utf8 combining characters handling" (utf8_handle_comb function in encoding.c) in screen before 4.0.3 allows user-assisted attackers to cause a denial of service (crash or hang) via certain UTF8 sequences.
CVSS Score
2.6
EPSS Score
0.01
Published
2006-10-24
Integer signedness error in ansi.c for GNU screen 4.0.1 and earlier, and 3.9.15 and earlier, allows local users to execute arbitrary code via a large number of ";" (semicolon) characters in escape sequences, which leads to a buffer overflow.
CVSS Score
10.0
EPSS Score
0.012
Published
2003-12-15
Buffer overflow in the Braille module for GNU screen 3.9.11, when HAVE_BRAILLE is defined, allows local users to execute arbitrary code.
CVSS Score
4.6
EPSS Score
0.001
Published
2002-04-23